Mana cost

The mana cost of a card or Hero Power determines how much mana is required to play that card from the hand or to use that Hero Power. The number is displayed inside a blue crystal in the upper left corner of each card, and at the top of each Hero Power. When a card is played or a Hero Power is used, its mana cost is deducted from the player's available mana for that turn.

All cards and Hero Powers have mana costs, even those not normally played from the hand (such as minions summoned by summon effects like Murloc Tidehunter's Battlecry or Unleash the Hounds). This is relevant when cards like Evolve affect minions based on their cost, or when minions are returned to the hand.

Most cards have mana costs in the 0-10 range, while all playable Hero Powers cost 2 mana (with the exception of the Demon Hunter's Demon Claws). However, some effects can modify mana costs (even though not below 0).

Mana cost might be considered an attribute or statistic of a card, but does not affect the card in combat. The mana cost of a card determines how early or late in the game it may be played and is usually an indicator of the card's overall power. The distribution of mana costs in a deck is the mana curve, an important strategic consideration.

Modifying costs

Effects may reduce or increase the cost of cards and Hero Powers, or set them to a specific value. These effects either are ongoing effects or act by creating cost-modification enchantments (for a complete list see Cards below).

• Cards that modify their own mana cost (such as Dread Corsair) only work while in the player's hand: they have no effect while the card is anywhere else, such as in the player's deck or in the battlefield (see in-hand effects for details). Most of them are ongoing effects, while a few (Nerubian Prophet, Knight of the Wild) are triggered effects.
• Ongoing effects that modify the mana cost of other cards or Hero Powers (such as Mana Wraith and Maiden of the Lake) apply a modifier to all eligible cards currently in hand (but not to cards in play) and to eligible Hero Powers: removing or neutralising (for example by using Silence effects) the source of the effect will therefore immediately remove the modifier from any affected card or Hero Power.

Example: A Mechwarper would allow a Clockwork Gnome to be played for 0 mana, returned to the hand, and played for 0 mana again, but even with the Mechwarper in play a Recombobulator would cause the Clockwork Gnome to be transformed into a 1-Cost minion, not a 0-Cost one.

• Cost-modification enchantments may be created by spells (like Unstable Portal), triggered effects (like Emperor Thaurissan) or Battlecries (like Millhouse Manastorm and Saboteur).

• Cost-modification enchantments that are attached to a card in a player's deck (such as due to Renounce Darkness) are not removed when the modified card is drawn.
• Cost-modification enchantments that are attached to a card in hand are removed once the modified card is played: effects which depend on mana cost will then use the original mana cost of the card and, if it is returned to the hand, re-playing it will cost the original amount.

Example: A Bloodfen Raptor drawn with Call Pet costs 0 mana when first played, but would cost 2 mana to re-play if returned to the hand by Youthful Brewmaster, and would be transformed into a 2-Cost minion if targeted by Recombobulator.

• Some cost-modification enchantments (such as Preparation and Saboteur) are attached to a player instead of a card. Usually these enchantments have a limited duration and expire by themselves "the next time something happens" (which can be many turns later, such as for Dragon Consort and Fencing Coach) or "at the end of the turn". The only exception is Raza the Chained, whose effect lasts for the rest of the game.

When there are multiple cost-modification effects, they are applied in the order in which they have been generated (from oldest to newest; notice that cards that were in a player's deck at the beginning of the game still have that timestamp when drawn); the only exception is Summoning Portal, which is always applied first even if played last. Unlike Health/Attack enchantments and auras, cost-modification enchantments and auras have no special priority over one another.

Example: If Millhouse Manastorm is played followed by Loatheb, spell costs are first set to 0, then increased by 5 for a final cost of 5. In the opposite order, spell costs would first increase by 5, then be set to 0, for a final cost of 0.

Example: If Emperor Thaurissan's effect triggers, reducing the mana cost of an in-hand Wolfrider to 2, and Naga Sea Witch then comes into play, her effect immediately increases the Wolfrider card's cost to 5; at the end of that turn, Emperor Thaurissan triggers again, reducing the Wolfrider's mana cost to 4.

Example: If Emperor Thaurissan's effect triggers, reducing the mana cost of an in-hand War Golem to 6, and Aviana then comes into play, her effect immediately reduces the War Golem card's cost to 1; at the end of that turn, Emperor Thaurissan triggers again, reducing the War Golem's mana cost to 0.

Example: If you have a Naga Sea Witch in play and a Fiery War Axe equipped and draw a Dread Corsair from your deck, the Dread Corsair's final mana cost will be 5: the Dread Corsair card, being in your deck since the beginning of the game, is older than the Naga Sea Witch minion in play, and thus its effect is applied first, and then overwritten by the newer one by Naga Sea Witch. However, if you later return the Dread Corsair minion from the battlefield to your hand, it becomes a new Dread Corsair card, which is then newer than the Naga Sea Witch minion: thus, the Dread Corsair card's cost is first set to 5 by Naga Sea Witch and then, if you are still equipping the Fiery War Axe, it is reduced by 3, to a final mana cost of 2.

Example: If Knight of the Wild triggered twice before Aviana enters play, early cost-modification effects are overridden by the "newer" Aviana effect, for a final mana cost of 1; if you later summon another Beast, Knight of the Wild triggers again, reducing its mana cost to 0.

Example: If you play Naga Sea Witch and then Aviana, minion cards in your hand will cost 1; if you play Aviana and then Naga Sea Witch, minion cards in your hand will cost 5.

Example: Suppose you have Wilfred Fizzlebang on the battlefield. If you play Aviana and then use Life Tap, the minion card you draw will cost 0; if you use Life Tap and then play Aviana, the minion card you draw will cost 1.

Example: If Bright-Eyed Scout's Battlecry draws Mountain Giant, its cost will be set to 5 regardless of the number of cards in hand, and the cost will not change as the hand gains or loses cards: since the Mountain Giant card was created at the beginning of the game, its effect is always considered older than the Bright-Eyed Scout's Battlecry.

Example: If Bright-Eyed Scout's Battlecry draws Nerubian Prophet, its cost will be set to 5, and at the start of each subsequent turn its cost will drop to 4, 3, 2, and so on.

If a card's or Hero Power's modified cost would be negative, 0 is displayed and used instead (players can never gain mana from paying the cost of a card or Hero Power).

• This minimum of 0 is only enforced after all other cost modifications have been taken into account: this allows reductions like Far Sight to counteract subsequent increases such as Loatheb's.
• One may think of cards and Hero Powers as having two mana costs, an "actual" cost and a "hidden" cost. The hidden cost is simply the original mana cost with all subsequent modifications, and has no lower limit. The actual cost, which is displayed on the card or Hero Power and charged when the card is played or the Hero Power is used, is the greater of the hidden cost and 0.

Example: If Far Sight draws an Earth Shock, the Earth Shock has a hidden cost of -2 and an actual cost of 0; if the opponent then plays Loatheb the hidden cost increases by 5 and becomes -2 + 5 = 3, and the actual cost rises to 3 too. Thus, since only actual costs are displayed, apparently Far Sight reduced the cost of Earth Shock only by 1 (instead of 3) and Loatheb increased it only by 3 (instead of 5): however, even though Far Sight's reduction of -3 was temporarily, partially nullified by the lower limit of 0, it still remained in effect for later recalculation of the mana cost.

If a card's modified cost is different from its base cost, its mana cost will be displayed in a different colour:

• if the modified cost is lower than the base cost, it will be displayed in green;
• if the modified cost is higher than the base cost, it will be displayed in red;
• if a card's modified cost is equal to its base cost (for example because multiple cost modifying effects cancel each other out), the colour of its mana cost will not be altered.

Cho'gall's and Seadevil Stinger's Battlecry causes the next spell or Murloc the player plays that turn to deal to their hero an amount of damage equal to the card's mana cost, instead of expending mana.

• The mana costs of those cards are affected as usual by cost-modification effects, and thus their "Health cost" is modified accordingly.
• Despite the card's ambiguous wording, Cho'gall's and Seadevil Stinger's effect deal damage to the controlling hero, thus affecting Armor (if any) before reducing the hero's Health.
• Playing an affected card will cost no mana. However, card text effects which consume mana (such as Forbidden Ritual) are not altered.
• The player must be Immune or have a combined Health and Armor total greater than the final mana cost of an affected card in order to be allowed to play it (regardless of their currently available mana). Trying to play an affected card will otherwise result in an error message.
• Cards in hand that can be played using Cho'gall's or Seadevil Stinger's effect will have their mana cost highlighted by red bubbles.

Strategy

Main article: Mana curve

The mana cost of a card determines which round it will become available to play, as well as which cards it can be used in combination with. The mana curve of a deck describes how many cards are present at each mana cost, and is an important factor determining options available to a player based on the amount of mana available on each turn. When building a deck, it is wise to consider whether mana costs of cards and combinations follow the desired curve.

Expert players can also use this knowledge to predict which cards may be played on certain rounds. Mind Control, for instance, generally only becomes playable from round 10 onwards, while a Leeroy Jenkins + Power Overwhelming combo is available once the warlock has 6 mana.

Cards that modify mana cost

For Wild format listings, see Mana cost/Wild format

Name / Desc	Rarity	Type	Subtype	Class	Cost	Atk	HP	Description
Ascendant Scroll	None	Hero Power		Mage	2			Hero Power Add a random Mage spell to your hand. It costs (2) less.
Tome of Origination	None	Hero Power		Warlock	2			Hero Power Draw a card. It costs (0).
Wondrous Wand	None	Spell		Any	3			Draw 3 cards. Reduce their Costs to (0).
Vashj Prime	None	Minion	General	Shaman	7	5	4	Spell Damage +1 Battlecry: Draw 3 spells. Reduce their Cost by (3).
Shadowstep	Common	Spell		Rogue	0			Return a friendly minion to your hand. It costs (2) less. Rogue dance troops will sometimes Shadowstep away at the end of a performance. Crowds love it.
Aldor Attendant	Common	Minion	General	Paladin	1	1	3	Battlecry: Reduce the Cost of your Librams by (1) this game. Will check to make sure you have a valid libramary card.
Athletic Studies	Common	Spell		Warrior	1			Discover a Rush minion. Your next one costs (1) less. It's a quick read.
Carrion Studies	Common	Spell		Hunter	1			Discover a Deathrattle minion. Your next one costs (1) less. A good read but a little too much fluff.
Demonic Studies	Common	Spell		Warlock	1			Discover a Demon. Your next one costs (1) less. "Do you wanna summon a demon? I wanna summon a demon!"
Draconic Studies	Common	Spell		Priest	1			Discover a Dragon. Your next one costs (1) less. Our Draconic Studies program has a high rate of burnout.
Nature Studies	Common	Spell		Druid	1			Discover a spell. Your next one costs (1) less. "I have a first edition! Go ahead, count the rings."
Primordial Studies	Common	Spell			1			Discover a Spell Damage minion. Your next one costs (1) less. A long forgotten tome whose very essence seeps of magic. 40 dust, used.
Tour Guide	Common	Minion	General	Any	1	1	1	Battlecry: Your next Hero Power costs (0). "Here is the original blueprint for the Academy grounds! Don't mind those so-called dark chambers… They'll be at the end of the tour."
Ancient Mysteries	Common	Spell		Mage	2			Draw a Secret from your deck. It costs (0). I'm not saying it was aliens, but it was TOTALLY aliens!
Freezing Trap	Common	Spell		Hunter	2			Secret: When an enemy minion attacks, return it to its owner's hand and it costs (2) more. "Dang, that's cold." - appropriate response to Freezing Trap, or a mean joke.
Incanter's Flow	Common	Spell		Mage	2			Reduce the Cost of spells in your deck by (1). "Gettin' them discounts in bulk amounts, spells can come, and spells can go, castin' costs drop with my sweet, sweet flow."
Sorcerer's Apprentice	Common	Minion	General	Mage	2	3	2	Your spells cost (1) less. Apprentices are great for bossing around. "Conjure me some mana buns! And a coffee! Make that a mana coffee!"
Waxmancy	Common	Spell		Rogue	2			Discover a Battlecry minion. Reduce its Cost by (2). The waxmancer works with flame and form, giving shape to figures warm. Some think he's a crazy creeper, but crafting minions is simply cheaper.
Bogbeam	Common	Spell		Druid	3			Deal 3 damage to a minion. Costs (0) if you have at least 7 Mana Crystals. Some think the mysterious bright lights in the bog are alien invaders, others think they're just swamp gas. Turns out, it's just druids.
Imprisoned Satyr	Common	Minion	Demon	Druid	3	3	3	Dormant for 2 turns. When this awakens, reduce the Cost of a random minion in your hand by (5). "C'mon down to Illhoof's bargain bin! When the satyr's free, he'll lower your fee!"
Dread Corsair	Common	Minion	Pirate	Any	4	3	3	Taunt. Costs (1) less per Attack of your weapon. "Yarrrr" is a pirate word that means "Greetings, milord."
Summoning Portal	Common	Minion	General	Warlock	4	0	4	Your minions cost (2) less, but not less than (1). NOT LESS THAN 1! Don't get any ideas!
Cutting Class	Common	Spell			5			Draw 2 cards. Costs (1) less per Attack of your weapon. When you actually are the sharpest tool in the shed
Venture Co. Mercenary	Common	Minion	General	Any	5	7	6	Your minions cost (3) more. No Job is too big. No fee is too big.
Candle Breath	Common	Spell		Rogue	6			Draw 3 cards. Costs (3) less while you're holding a Dragon. "And Waxadred shall light their fires, with roaring breath hotter than pyres! Come before him, scamp and vandal, pledge your faith and lift your candle!"
Fel Guardians	Common	Spell		Demon Hunter	7			Summon three 1/2 Demons with Taunt. Costs (1) less whenever a friendly minion dies. What happened after the guardians tripped? They Fel.
Blackjack Stunner	Rare	Minion	General	Rogue	1	1	2	Battlecry: If you control a Secret, return a minion to its owner's hand. It costs (1) more. "I'm about to ruin this 10-cost minion's whole career."
Cult Neophyte	Rare	Minion	General	Any	2	3	2	Battlecry: Your opponent's spells cost (1) more next turn. Make a new recruit's deficiencies your efficiencies.
Ironbark	Rare	Spell		Druid	2			Give a minion +1/+3 and Taunt. Costs (0) if you have at least 7 Mana Crystals. "The important thing, son, is to protect your spores! I have spoken!"
Mana Wraith	Rare	Minion	General	Any	2	2	2	ALL minions cost (1) more. They come out at night to eat leftover mana crystals. "Mmmmmm," they say.
Pint-Sized Summoner	Rare	Minion	General	Any	2	2	2	The first minion you play each turn costs (1) less. She's quite jealous of the Gallon-Sized Summoner.
Generous Mummy	Rare	Minion	General	Any	3	5	4	Reborn Your opponent's cards cost (1) less. Yeah, she's mummified, but her money hasn’t dried up!
Kirin Tor Mage	Rare	Minion	General	Mage	3	4	3	Battlecry: The next Secret you play this turn costs (0). The Kirin Tor reside in the floating city of Dalaran. How do you make a Dalaran float? Two scoops of ice cream, one scoop of Dalaran.
Frenzied Felwing	Rare	Minion	Demon	Any	4	3	2	Costs (1) less for each damage dealt to your opponent this turn. Not to be confused with the "friendsy” felwing.
Kirin Tor Tricaster	Rare	Minion	General	Mage	4	3	3	Spell Damage +3 Your spells cost (1) more. The math checks out!
Raging Felscreamer	Rare	Minion	General	Demon Hunter	4	4	4	Battlecry: The next Demon you play costs (2) less. Screaming loudly will not reduce the cost of non-demonic goods.
The Dark Portal	Rare	Spell		Warlock	4			Draw a minion. If you have at least 8 cards in hand, it costs (5) less. Some say it's the source of Azeroth's greatest problems—aside from the gnomes.
Torrent	Rare	Spell		Shaman	4			Deal 8 damage to a minion. Costs (3) less if you cast a spell last turn. Weeks of underwater cross-training have really built up her fourarms.
Vendetta	Rare	Spell		Rogue	4			Deal 4 damage to a minion. Costs (0) if you're holding a card from another class. A vengeful and vicarious vanguard against violent villains or vexed victims.
Aeroponics	Rare	Spell		Druid	5			Draw 2 cards. Costs (2) less for each Treant you control. Good seeds can go far.
Aldor Truthseeker	Rare	Minion	General	Paladin	5	4	6	Taunt. Battlecry: Reduce the Cost of your Librams by (2) this game. It’s under 'T.'
Naga Sand Witch	Rare	Minion	General	Mage	5	5	5	Battlecry: Change the Cost of spells in your hand to (5). 5 mana footlong, anyone?
Skull of Gul'dan	Rare	Spell		Demon Hunter	6			Draw 3 cards. Outcast: Reduce their Cost by (3). A fellow of evil possessed, of most devious shadow. He hath turned on his kin a thousand times, and now, how abhorred in all imagination he is!
Bloodboil Brute	Rare	Minion	General	Warrior	7	5	8	Rush Costs (1) less for each damaged minion. Call Gurtogg a brute if you like, but no one else cares about the wounded like he does.
Dragoncaster	Rare	Minion	General	Mage	7	4	4	Battlecry: If you're holding a Dragon, your next spell this turn costs (0). It’s challenging to perform magic on dragonback. It’s so easy to drop the rabbit.
Mogu Fleshshaper	Rare	Minion	General	Shaman	9	3	4	Rush. Costs (1) less for each minion on the battlefield. He's here to shape *clap* you up!
Embiggen	Epic	Spell		Druid	0			Give all minions in your deck +2/+2. They cost (1) more (up to 10). Did you set it to "wumbo?"
Preparation	Epic	Spell		Rogue	0			The next spell you cast this turn costs (2) less. "Be Prepared" - Rogue Motto
Dwarven Archaeologist	Epic	Minion	General	Any	2	2	3	After you Discover a card, reduce its cost by (1). She's making great progress on paying off that advanced degree.
Blowtorch Saboteur	Epic	Minion	General	Any	3	3	4	Battlecry: Your opponent's next Hero Power costs (3). Before he came along, we went through a lot of duct tape.
Eye Beam	Epic	Spell		Demon Hunter	3			Lifesteal. Deal 3 damage to a minion. Outcast: This costs (1). Sometimes looks CAN kill.
Far Sight	Epic	Spell		Shaman	3			Draw a card. That card costs (3) less. Drek'thar can't see, but he can see. You know what I mean? It's ok if you don't.
Fate Weaver	Epic	Minion	Dragon	Priest	4	3	6	Battlecry: If you've Invoked twice, reduce the Cost of cards in your hand by (1). Do not draw the attention of a Fate Weaver, for it will always loom over your destiny.
Potion of Illusion	Epic	Spell			4			Add 1/1 copies of your minions to your hand. They cost (1). Unfortunately, there's no potion that can make you unsee all the faces in that bottle.
Waggle Pick	Epic	Weapon		Rogue	4	4	2	Deathrattle: Return a random friendly minion to your hand. It costs (2) less. Kobolds informally refer to its effect as a deathwaggle.
Anubisath Defender	Epic	Minion	General	Druid	5	3	5	Taunt. Costs (0) if you've cast a spell that costs (5) or more this turn. Also comes running when he hears a can opener.
Boompistol Bully	Epic	Minion	General	Any	5	5	5	Battlecry: Enemy Battlecry cards cost (5) more next turn. Preventing insults with injuries.
Tentacled Menace	Epic	Minion	General	Any	5	6	5	Battlecry: Each player draws a card. Swap their Costs. He calls this one the "Calamari Special."
Devout Pupil	Epic	Minion	General		6	4	5	Divine Shield, Taunt Costs (1) less for each spell you've cast on friendly characters this game. He considers textbooks Light reading.
Scarlet Webweaver	Epic	Minion	Beast	Hunter	6	5	5	Battlecry: Reduce the Cost of a random Beast in your hand by (5). Isn't that nice? The spider made the explorer a sleeping bag!
Flesh Giant	Epic	Minion	General		8	8	8	Costs 1 less for each time your hero's Health changed during your turns. "A BIG mistake."
Mana Giant	Epic	Minion	Elemental	Mage	8	8	8	Costs (1) less for each card you've played this game that didn't start in your deck. Spell more and save more with a GIANT discount!
Jumbo Imp	Epic	Minion	Demon	Warlock	10	8	8	Costs (1) less whenever a friendly Demon dies while this is in your hand. Jumbo in size! Huge in E.V.I.L.!
Sea Giant	Epic	Minion	General	Any	10	8	8	Costs (1) less for each other minion on the battlefield. See? Giant.
Kanrethad Ebonlocke	Legendary	Minion	General	Warlock	2	3	2	Your Demons cost (1) less. Deathrattle: Shuffle 'Kanrethad Prime' into your deck. After Illidan's downfall, Kanrethad formed the Council of the Black Harvest to study Illidan's fel magic. Some say he was... green with envy.
Millhouse Manastorm	Legendary	Minion	General	Any	2	4	4	Battlecry: Enemy spells cost (0) next turn. "I'm gonna light you up, sweetcheeks!"
Frizz Kindleroost	Legendary	Minion	General	Any	4	5	4	Battlecry: Reduce the Cost of Dragons in your deck by (2). Frizz knows that baby dragons need warmth, care, and the highest possible level of goblin engineering.
Scargil	Legendary	Minion	Murloc	Shaman	4	4	4	Your Murlocs cost (1). Wanna know how he got those scars? So does he.
Anka, the Buried	Legendary	Minion	General	Rogue	5	5	5	Battlecry: Change each Deathrattle minion in your hand into a 1/1 that costs (1). "You look familiar. Were you at my first funeral?"
Bandersmosh	Legendary	Minion	General	Shaman	5	5	5	Each turn this is in your hand, transform it into a 5/5 copy of a random Legendary minion. The Shudderwock finds him particularly frumious.
Galakrond, Azeroth's End	Legendary	Hero card		Rogue	7			Battlecry: Draw 4 cards. They cost (1). Equip a 5/2 Claw.
Galakrond, the Apocalypse	Legendary	Hero card		Rogue	7			Battlecry: Draw 2 card. They costs (1). (Invoke twice to upgrade.)
Galakrond, the Nightmare	Legendary	Hero card		Rogue	7			Battlecry: Draw 1 card. It costs (1). (Invoke twice to upgrade.) The enormous creature unfurled terrifying claws dripping with poisonous ichor. King Togwaggle was pleased, but inwardly disappointed the great Nightmare refused to wear the candle.
Kael'thas Sunstrider	Legendary	Minion	General	Any	7	4	7	Every third spell you cast each turn costs (1). Descent of Dragons was merely a set back!
Keymaster Alabaster	Legendary	Minion	General	Any	7	6	8	Whenever your opponent draws a card, add a copy to your hand that costs (1). The key to his mastery is a solid stack of backup copies.
Jepetto Joybuzz	Legendary	Minion	General	Any	8	6	6	Battlecry: Draw 2 minions from your deck. Set their Attack, Health, and Cost to 1. "I'm a real toy now!"
Dragonqueen Alexstrasza	Legendary	Minion	Dragon	Any	9	8	8	Battlecry: If your deck has no duplicates, add 2 other random Dragons to your hand. They cost (1). Givin' lives and takin' names.
Ysiel Windsinger	Legendary	Minion	General	Druid	9	5	5	Your spells cost (1). Reach down into your lungs. The wind that resides there is your greatest treasure. It provides the gift of song, which is free. *But not less than (1)
Kalecgos	Legendary	Minion	Dragon	Mage	10	4	12	Your first spell each turn costs (0). Battlecry: Discover a spell. He was once the Aspect of Magic but gave it up to focus on cheap tricks.
Showing all 79 cards

Cost-modifying effects can be categorized by which entities they affect.

Hero Powers

Cards

The following cards have effects that modify the cost of other cards.

Self

The following cards modify their own mana cost while in hand. Most act on an ongoing basis based on current game conditions or history, but Nerubian Prophet and Knight of the Wild accumulate enchantments on themselves in response to game events that occur while in hand.

Related cards

For Wild format listings, see Mana cost/Wild format

Cost-affected cards

The following cards have effects that scale based on the mana cost of other existing cards.

Name / Desc	Rarity	Type	Subtype	Class	Cost	Atk	HP	Description
Witchy Lackey	None	Minion	General	Any	1	1	1	Battlecry: Transform a friendly minion into one that costs (1) more.
Mutate	Common	Spell		Shaman	0			Transform a friendly minion into a random one that costs (1) more. You'll get the transformation you want when murlocs fly.
Explosive Evolution	Common	Spell		Shaman	2			Transform a minion into a random one that costs (3) more. Let's give a big hand for goblin experimentation!
Bogstrok Clacker	Rare	Minion	General	Shaman	3	3	3	Battlecry: Transform adjacent minions into random minions that cost (1) more. This clacker's crackers for hacking slackers into whack attackers.
Conjurer's Calling	Rare	Spell		Mage	4			Twinspell Destroy a minion. Summon 2 minions of the same Cost to replace it. If only you'd let it go to voicemail...
Holy Wrath	Rare	Spell		Paladin	5			Draw a card and deal damage equal to its cost. C'mon Molten Giant!!
Devolving Missiles	Epic	Spell			1			Shoot three missiles at random enemy minions that transform them into ones that cost (1) less. Most intermural spell-dueling contests end with a field of wisps.
Bamboozle	Epic	Spell		Rogue	2			Secret: When one of your minions is attacked, transform it into a random one that costs (3) more. "WE DO YOU A BAMBOOZLE, HOOMAN!"
Ceremonial Maul	Epic	Weapon			3	2	2	Spellburst: Summon a Student with Taunt and stats equal to the spell's Cost. For the most discerning of hall monitors.
Steeldancer	Epic	Minion	General		4	4	4	Battlecry: Summon a random minion with Cost equal to your weapon's Attack. Pretty powerful if you blade your cards right.
Boggspine Knuckles	Epic	Weapon		Shaman	5	4	2	After your hero attacks, transform your minions into random ones that cost (1) more. I would NOT want to put my hand in there. It's... SQUISHY.
Guardian Animals	Epic	Spell			8			Summon two Beasts that cost (5) or less from your deck. Give them Rush. The guidelines specifically state: "Students may also bring an ironbeak owl OR an alleycat OR a toad." They never said how big.
Speaker Gidra	Legendary	Minion	General		3	1	4	Rush, Windfury Spellburst: Gain Attack and Health equal to the spell's Cost. If a teacher lectures in a forest, does she even make a sound?
The Fist of Ra-den	Legendary	Weapon		Shaman	4	1	4	After you cast a spell, summon a Legendary minion of that Cost. Lose 1 Durability. The mighty Ra-den was known as the Keeper of Storms. Unfortunately, he could not keep his fist.
Showing all 14 cards

Cost-specifying cards

The following cards only affect those existing cards which meet a specified cost-based criteria.

Name / Desc	Rarity	Type	Subtype	Class	Cost	Atk	HP	Description
Skydiving Instructor	Common	Minion	General	Any	3	2	2	Battlecry: Summon a 1-Cost minion from your deck. "Is it dangerous?" "For me? Not at all. Now jump!"
Nightshade Matron	Common	Minion	Demon	Warlock	4	5	5	Rush Battlecry: Discard your highest Cost card. Throws shade at those "high-cost" minions.
Expired Merchant	Rare	Minion	General	Warlock	2	2	1	Battlecry: Discard your highest Cost card. Deathrattle: Add 2 copies of it to your hand. The "best by" date is more like a guideline.
Call to Adventure	Rare	Spell		Paladin	3			Draw the lowest Cost minion from your deck. Give it +2/+2. Even the smallest minion can change the outcome of the game.
Felosophy	Epic	Spell			1			Copy the lowest Cost Demon in your hand. Outcast: Give both +1/+1. "Like, isn't evil subjective man?"
Magic Carpet	Epic	Minion	General	Any	3	1	6	After you play a 1-Cost minion, give it +1 Attack and Rush. Its small yet fierce riders are affectionately known as rug rats.
Blatant Decoy	Epic	Minion	General	Any	6	5	5	Deathrattle: Each player summons the lowest Cost minion from their hand. "Hah! You is being tricked by ME! Togwaggle!"
Showing all 7 cards

Cost-triggered cards

The following cards are triggered by cards of a specific cost.

Name / Desc	Rarity	Type	Subtype	Class	Cost	Atk	HP	Description
Steel Beetle	Rare	Minion	Beast	Druid	2	2	3	Battlecry: If you're holding a spell that costs (5) or more, gain 5 Armor. Steel you can trust—fashioned from the husk of an over-sized creepy-crawly.
Garden Gnome	Rare	Minion	General	Druid	4	2	3	Battlecry: If you're holding a spell that costs (5) or more, summon two 2/2 Treants. "Greetings, my little shrubs... It's whittlin' time."
Groundskeeper	Rare	Minion	General		4	4	5	Taunt Battlecry: If you're holding a spell that costs (5) or more, restore 5 Health. It’s tricky for dryads to tend the garden without trampling the flowers.
Sunreaver Warmage	Rare	Minion	General	Any	5	4	4	Battlecry: If you're holding a spell that costs (5) or more, deal 4 damage. What, did you expect the Sunreavers to be coldages?
Magic Carpet	Epic	Minion	General	Any	3	1	6	After you play a 1-Cost minion, give it +1 Attack and Rush. Its small yet fierce riders are affectionately known as rug rats.
Arcane Fletcher	Epic	Minion	General	Hunter	4	3	3	Whenever you play a 1-Cost minion, draw a spell from your deck. Stop trying to make fletch happen. It's not going to happen.
Anubisath Defender	Epic	Minion	General	Druid	5	3	5	Taunt. Costs (0) if you've cast a spell that costs (5) or more this turn. Also comes running when he hears a can opener.
Showing all 7 cards

Cost-listing cards

The following cards generate their random outcomes by considering all collectible cards that meet a specified cost-based criteria.

Name / Desc	Rarity	Type	Subtype	Class	Cost	Atk	HP	Description
Witchy Lackey	None	Minion	General	Any	1	1	1	Battlecry: Transform a friendly minion into one that costs (1) more.
First Day of School	Common	Spell		Paladin	0			Add 2 random 1-Cost minions to your hand. "Report to the bookstore to buy your books, the alchemist to buy your potions, and then get your wands at the… wandryroom?"
Mutate	Common	Spell		Shaman	0			Transform a friendly minion into a random one that costs (1) more. You'll get the transformation you want when murlocs fly.
Jar Dealer	Common	Minion	General	Any	1	1	1	Deathrattle: Add a random 1-Cost minion to your hand. What's in the jar? It could be anyone!
Explosive Evolution	Common	Spell		Shaman	2			Transform a minion into a random one that costs (3) more. Let's give a big hand for goblin experimentation!
Wandmaker	Common	Minion	General	Any	2	2	2	Battlecry: Add a 1-Cost spell from your class to your hand. She creates incredibly affordable wands of all shapes and sizes. But not owls. The owl is all-natural.
Golden Scarab	Common	Minion	Beast	Any	3	2	2	Battlecry: Discover a 4-Cost card. Who actually puts all the gold plating on these things, and why?
Netherwind Portal	Common	Spell		Mage	3			Secret: After your opponent casts a spell, summon a random 4-Cost minion. More aromatic than a regular portal.
Serpentshrine Portal	Common	Spell		Shaman	3			Deal 3 damage. Summon a random 3-Cost minion. Overload: (1) This is why you never flush a three-cost minion.
Plagued Protodrake	Common	Minion	Dragon	Any	8	8	8	Deathrattle: Summon a random 7-Cost minion. "What’s in the drake?! WHAT’S IN THE DRAKE?"
Magic Trick	Rare	Spell		Mage	1			Discover a spell that costs (3) or less. The world is not ready for an illusion of this depth and intricacy!
Partner Assignment	Rare	Spell		Druid	1			Add a random 2-Cost and 3-Cost Beast to your hand. In every group assignment, someone does all the legwork.
Trick Totem	Rare	Minion	Totem		2	0	3	At the end of your turn, cast a random spell that costs (3) or less. It knows how to sit still and do tricks. Still working on rolling over, though.
Bogstrok Clacker	Rare	Minion	General	Shaman	3	3	3	Battlecry: Transform adjacent minions into random minions that cost (1) more. This clacker's crackers for hacking slackers into whack attackers.
Dark Prophecy	Rare	Spell		Priest	3			Discover a 2-Cost minion. Summon it and give it +3 Health. It's always a dark prophecy with Madame Lazul. Where's my happy, fluffy prophecy?!
Conjurer's Calling	Rare	Spell		Mage	4			Twinspell Destroy a minion. Summon 2 minions of the same Cost to replace it. If only you'd let it go to voicemail...
Zul'Drak Ritualist	Rare	Minion	General	Any	4	3	9	Taunt Battlecry: Summon three random 1-Cost minions for your opponent. Generosity is a core value in cult culture.
Cobalt Spellkin	Rare	Minion	Dragon	Any	5	3	5	Battlecry: Add two 1-Cost spells from your class to your hand. Spews more spells than a sleep-talking wizard.
Teacher's Pet	Rare	Minion	Beast		5	4	5	Taunt Deathrattle: Summon a random 3-Cost Beast. Really goes the extra mile to get the Hay+.
Exotic Mountseller	Rare	Minion	General	Any	7	5	8	Whenever you cast a spell, summon a random 3-Cost Beast. *Taps roof of mammoth* "You can fit so many squirrels in this thing!"
Devolving Missiles	Epic	Spell			1			Shoot three missiles at random enemy minions that transform them into ones that cost (1) less. Most intermural spell-dueling contests end with a field of wisps.
Bamboozle	Epic	Spell		Rogue	2			Secret: When one of your minions is attacked, transform it into a random one that costs (3) more. "WE DO YOU A BAMBOOZLE, HOOMAN!"
Enchanted Cauldron	Epic	Minion	General	Any	3	1	6	Spellburst: Cast a random spell of the same Cost. Do you smell what the cauldron is cooking? If so, we apologize.
Diseased Vulture	Epic	Minion	Beast	Warlock	4	3	5	After your hero takes damage on your turn, summon a random 3-Cost minion. He's off the twig! He's kicked the bucket! THIS IS AN EX-VULTURE!
Steeldancer	Epic	Minion	General		4	4	4	Battlecry: Summon a random minion with Cost equal to your weapon's Attack. Pretty powerful if you blade your cards right.
Apexis Blast	Epic	Spell		Mage	5			Deal 5 damage. If your deck has no minions, summon a random 5-Cost minion. Lonely mages can still have a blast!
Boggspine Knuckles	Epic	Weapon		Shaman	5	4	2	After your hero attacks, transform your minions into random ones that cost (1) more. I would NOT want to put my hand in there. It's... SQUISHY.
Runic Carvings	Epic	Spell			6			Choose One - Summon four 2/2 Treant Totems; or Overload: (2) to summon them with Rush.
Marsh Hydra	Epic	Minion	Beast	Druid	7	7	7	Rush After this attacks, add a random 8-Cost minion to your hand. Three heads of marsh-mashing, bog-bashing, swamp-stomping fury!
Power of Creation	Epic	Spell		Mage	8			Discover a 6-Cost minion. Summon two copies of it. Mostly used for party tricks, to be honest.
Big Bad Archmage	Epic	Minion	General	Any	10	6	6	At the end of your turn, summon a random 6-Cost minion. "My, my, what big minions I have!"
Instructor Fireheart	Legendary	Minion	General	Shaman	3	3	3	Battlecry: Discover a spell that costs (1) or more. If you play it this turn, repeat this effect. When you have fire in your heart, even death can't stop you.
Lorekeeper Polkelt	Legendary	Minion	General	Any	4	4	5	Battlecry: Reorder your deck from the highest Cost card to the lowest Cost card. quicksort [] = [] quicksort (x:xs) = quicksort small ++ (x : quicksort large) where small = [y y <- xs, y <= x] large = [y y <- xs, y > x]
The Fist of Ra-den	Legendary	Weapon		Shaman	4	1	4	After you cast a spell, summon a Legendary minion of that Cost. Lose 1 Durability. The mighty Ra-den was known as the Keeper of Storms. Unfortunately, he could not keep his fist.
Jandice Barov	Legendary	Minion	General		5	2	1	Battlecry: Summon two random 5-Cost minions. Secretly pick one that dies when it takes damage. Her parents own Scholomance. Of course she's going to play tricks on the students!
Nethrandamus	Legendary	Minion	Dragon	Demon Hunter	9	8	8	Battlecry: Summon two random 0-Cost minions. (Upgrades each time a friendly minion dies!) Missed the big descent with the other dragons. But better late and nether!
King Phaoris	Legendary	Minion	General	Any	10	5	5	Battlecry: For each spell in your hand, summon a random minion of the same Cost. When you're the king of the cats, the whole desert is your litterbox.
Showing all 37 cards

See also

• Mana
• Mana curve
• In-hand effect
• Joust