Secret

Secret
Hidden until a specific action occurs on your opponent's turn.

A shaman with mage and paladin Secrets.

A Secret is a spell card that is cast normally but has a delayed, hidden effect, which only takes place when a specific event occurs. When a Secret is played, a Secret icon appears on the caster's portrait, but the name and details of the Secret are not revealed to the opponent until the card is activated by its hidden condition.

Secrets can only be activated on the opponent's turn, preventing the player from triggering them themselves. There is however one exception - Competitive Spirit, which activates at the start of the player's turn.^[1]

Secret is also the name of the ability all Secret cards have.

Originally, secret cards were limited to mages, paladins, and hunters. In the Kobolds and Catacombs expansion, rogues became the fourth secret class.

Notes[edit | edit source]

Secrets triggered by a minion being played will take place after any Battlecry. For example, Mirror Entity will copy a Twilight Drake after its additional Health has been applied.
All Secrets available to a class have the same mana cost. This prevents opponents from guessing the Secret based upon its cost, which is the only information revealed when a player plays a Secret from their own class.
Each class' Secrets are a different colour: pink for mages, yellow for paladins, green for hunters, gray for rogues. If a player plays a secret belonging to another class, it will retain its original class colour.^[2]
Secrets created by Lorewalker Cho are revealed publicly when played, and can be revealed after play by hovering over the Secret icon.^[3]
In some cases a Secret's triggering event may occur, but the Secret's effect cannot activate. This can happen with Mirror Entity and Noble Sacrifice if there is no room remaining on the hero's board, with Avenge if there are no friendly minions left on the board, and with multiple Secrets when a Secret's specific target is removed by another effect, such as a previous Secret (see below). In such cases, the Secret will simply remain in place without taking effect, revealing itself, or giving any indication that its trigger condition was met.
The limited choice of Secrets available to each class allows experienced players to logically determine the identity of unrevealed Secrets. Since each Secret has a specific trigger, players can intentionally test the Secret to attempt to determine its effect, attempt to draw the Secret out with weak cards and actions, or simply hedge their bets in order to minimise its negative consequences. For example, a player facing a mage with a single active Secret may choose to summon a weaker minion before summoning a stronger one, in case their opponent has Mirror Entity, and then attack with the weaker minion first, in case that Secret is a Vaporize.
While they have special trigger conditions, Secrets are spells, and will activate all spell-related effects. Likewise, Secrets that deal damage can be improved by Spell Damage.
When Secrets and triggered effects are activated from the same trigger, the effects will activate in the order in which they were played.^[4]
Quest cards are like Secrets in that they take up a Secret slot, but they cannot be affected by Secret-interacting cards like Eater of Secrets, Kezan Mystic, or Flare.
If a hero is destroyed by the activation of an enemy Secret, the game will end there, without allowing any triggering actions to complete.^[5] Example: Both players are at 2 Health. One player sends a Stormwind Knight to attack the enemy hero, thus activating the opponent's Explosive Trap. The Trap deals 2 damage to the first player, defeating them. The game then ends with the Stormwind Knight frozen mid-attack, with the second player still at 2 Health, resulting in a win for the second player. On the other hand, Secrets always resolve before the game can end, allowing Secrets such as Eye for an Eye to result in a draw, with both heroes destroyed as a result of the same action. For further details, see Advanced rulebook#Secrets.

Multiple Secrets[edit | edit source]

Players cannot have more than one copy of the same Secret active at any one time. Players are unable to play Secret cards which match one of their active Secrets.

When played directly from the hand, players can have up to 5 different Secrets active at a time. Once this limit is reached, the player will be unable to play further Secret cards.^[6] Kezan Mystic also does not allow the player to exceed 5 Secrets.^[7] Mysterious Challenger will not play more than 5 Secrets from your deck.^[8]

As of January 2015, a bug^[9] allows Mad Scientist to place additional different Secrets into play through its Deathrattle, even if this causes the number of Secrets to exceed 5.^[2]^[10]^[11] Secrets beyond the 5 limit will activate and take effect normally, and in the correct order.^[12]

Multiple Secrets can trigger from a single event, for example a minion attacking the hero will activate all Explosive Trap, Misdirection and Freezing Trap secrets active on that hero at the time.^[13]

Only one Secret can take effect at a time, and multiple activated Secrets will always take effect in the order in which they were played. For example, a minion attacking a hunter who has played Misdirection followed by Freezing Trap will be Misdirected before then being returned to the controlling player's hand. This can make the order in which Secrets are played extremely significant.

If a Secret removes the specific target for another Secret which was already triggered, the second Secret will not take effect, since it now lacks a target. For example, if Freezing Trap removes the minion which would have been the target of Misdirection, the Misdirection will not trigger, since it no longer has a target.
- Note that this rule only applies for Secrets which require specific targets; Secrets such as Explosive Trap and Snake Trap do not require targets, and will always take effect once triggered, even if the original trigger minion has been removed from play.

Secrets[edit | edit source]

This section lists all collectible Secrets.

Hunter[edit | edit source]

Name / Desc	Rarity	Type	Class	Cost	Description
Explosive Trap	Common	Spell	Hunter	2	Secret: When your hero is attacked, deal 2 damage to all enemies. It traps your food AND cooks it for you!
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.
Pressure Plate	Common	Spell	Hunter	2	Secret: After your opponent casts a spell, destroy a random enemy minion. The appropriate dishware for stressful situations.
Snipe	Common	Spell	Hunter	2	Secret: After your opponent plays a minion, deal 4 damage to it. A great sniper hits the spot. Just like a delicious flank of boar. Mmmmm.
Misdirection	Rare	Spell	Hunter	2	Secret: When a character attacks your hero, instead he attacks another random character. Sometimes it's as simple as putting on a fake mustache and pointing at someone else.
Pack Tactics	Rare	Spell	Hunter	2	Secret: When a friendly minion is attacked, summon a 3/3 copy. "Just you wait, I’ll go get on my main!"
Snake Trap	Epic	Spell	Hunter	2	Secret: When one of your minions is attacked, summon three 1/1 Snakes. Why did it have to be snakes?
Showing all 7 cards

Wild format

This section contains information exclusive to Wild format.

Name / Desc	Rarity	Type	Class	Cost	Description
Bear Trap	Common	Spell	Hunter	2	Secret: After your hero is attacked, summon a 3/3 Bear with Taunt. You'll never guess what's in that conveniently bear-sized, bear-smelling box.
Dart Trap	Common	Spell	Hunter	2	Secret: After an opposing Hero Power is used, deal 5 damage to a random enemy. Five years of tap-dancing lessons are FINALLY going to pay off!
Cat Trick	Rare	Spell	Hunter	2	Secret: After your opponent casts a spell, summon a 4/2 Panther with Stealth. "I know some new tricks, a lot of good tricks. I will show them to you. Medivh will not mind at all if I do."
Hidden Cache	Rare	Spell	Hunter	2	Secret: After your opponent plays a minion, give a random minion in your hand +2/+2. There is an urban legend that the first Opponent’s strike provoked the determination of geeks, ghouls,rats,bots and minions to cross the road from curious to downright needing answers from secret cache holders.
Venomstrike Trap	Rare	Spell	Hunter	2	Secret: When one of your minions is attacked, summon a 2/3 Poisonous Cobra. Snakes on a frozen plain.
Wandering Monster	Rare	Spell	Hunter	2	Secret: When an enemy attacks your hero, summon a 3-Cost minion as the new target. Not all who wander are lost. This one is lost though, for sure.
Rat Trap	Epic	Spell	Hunter	2	Secret: After your opponent plays three cards in a turn, summon a 6/6 Rat. MISSING: One giant rat. Please return to King Togwaggle.
Showing all 7 cards

Mage[edit | edit source]

Name / Desc	Rarity	Type	Class	Cost	Description
Flame Ward	Common	Spell	Mage	3	Secret: After a minion attacks your hero, deal 3 damage to all enemy minions. Not to be confused with the burn ward.
Ice Barrier	Common	Spell	Mage	3	Secret: When your hero is attacked, gain 8 Armor. This is Rank 1. Rank 2 is Chocolate Milk Barrier.
Mirror Entity	Common	Spell	Mage	3	Secret: After your opponent plays a minion, summon a copy of it. "You go first." - Krush'gor the Behemoth, to his pet boar.
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.
Counterspell	Rare	Spell	Mage	3	Secret: When your opponent casts a spell, Counter it. What's the difference between a mage playing with Counterspell and a mage who isn't? The mage who isn't is getting Pyroblasted in the face.
Vaporize	Rare	Spell	Mage	3	Secret: When a minion attacks your hero, destroy it. Rumor has it that Deathwing brought about the Cataclysm after losing a game to this card. We may never know the truth.
Spellbender	Epic	Spell	Mage	3	Secret: When an enemy casts a spell on a minion, summon a 1/3 as the new target. While it's fun to intercept enemy lightning bolts, a spellbender much prefers to intercept opposing Marks of the Wild. It just feels meaner. And blood elves... well, they're a little mean.
Showing all 7 cards

Wild format

This section contains information exclusive to Wild format.

Name / Desc	Rarity	Type	Class	Cost	Description
Duplicate	Common	Spell	Mage	3	Secret: When a friendly minion dies, put 2 copies of it into your hand. The one time when duping cards won't get your account banned!
Frozen Clone	Common	Spell	Mage	3	Secret: After your opponent plays a minion, put 2 copies of it into your hand. It's like déjà vu, times two.
Effigy	Rare	Spell	Mage	3	Secret: When a friendly minion dies, summon a random minion with the same Cost. Burning man, brah.
Explosive Runes	Rare	Spell	Mage	3	Secret: After your opponent plays a minion, deal 6 damage to it and any excess to their hero. Sometimes it's safer NOT to read the warning signs.
Mana Bind	Rare	Spell	Mage	3	Secret: When your opponent cast a spell, add a copy to your hand that costs (0). Nice spell. YOINK!
Potion of Polymorph	Rare	Spell	Mage	3	Secret: After your opponent plays a minion, transform it into a 1/1 Sheep. Tastes like Baaaaananas.
Ice Block	Epic	Spell	Mage	3	Secret: When your hero takes fatal damage, prevent it and become Immune this turn. Ice is nice, and will suffice!
Splitting Image	Epic	Spell	Mage	3	Secret: When one of your minions is attacked, summon a copy of it. Sometimes you get punched so hard they* see double.*
Showing all 8 cards

Paladin[edit | edit source]

Name / Desc	Rarity	Type	Class	Cost	Description
Eye for an Eye	Common	Spell	Paladin	1	Secret: When your hero takes damage, deal that much damage to the enemy hero. Justice sometimes takes the form of a closed fist into a soft cheek.
Never Surrender!	Common	Spell	Paladin	1	Secret: When your opponent casts a spell, give your minions +2 Health. But sometimes concede.
Noble Sacrifice	Common	Spell	Paladin	1	Secret: When an enemy attacks, summon a 2/1 Defender as the new target. We will always remember you, "Defender!"
Redemption	Common	Spell	Paladin	1	Secret: When a friendly minion dies, return it to life with 1 Health. I am not sure how you get demptioned the first time. It’s a mystery!
Repentance	Common	Spell	Paladin	1	Secret: After your opponent plays a minion, reduce its Health to 1. Repentance often comes in the moment before obliteration. Curious.
Showing all 5 cards

Wild format

This section contains information exclusive to Wild format.

Name / Desc	Rarity	Type	Class	Cost	Description
Autodefense Matrix	Common	Spell	Paladin	1	Secret: When one of your minions is attacked, give it Divine Shield. We call it the bubble machine.
Avenge	Common	Spell	Paladin	1	Secret: When one of your minions dies, give a random friendly minion +3/+2. Several paladins have joined together to deliver justice under the name "Justice Force." Their lawyer talked them out of calling themselves the Justice League.
Sacred Trial	Common	Spell	Paladin	1	Secret: After your opponent has at least 3 minions and plays another, destroy it. You have chosen poorly.
Competitive Spirit	Rare	Spell	Paladin	1	Secret: When your turn starts, give your minions +1/+1. Competition can be an inspiration to improve oneself. Or kill all the competitors.
Getaway Kodo	Rare	Spell	Paladin	1	Secret: When a friendly minion dies, return it to your hand. Get to da Kodo! Now!
Hidden Wisdom	Epic	Spell	Paladin	1	Secret: After your opponent plays three cards in a turn, draw 2 cards. Find your own wisdom. Perhaps behind the couch.
Showing all 6 cards

Rogue[edit | edit source]

Name / Desc	Rarity	Type	Class	Cost	Description
Dirty Tricks	Common	Spell	Rogue	2	Secret: After your opponent casts a spell, draw 2 cards. "Ahh sand in my eyes! Also, I'm being stabbed."
Plagiarize	Common	Spell	Rogue	2	Secret: At the end of your opponent's turn, add copies of the cards they played to your hand. Copying is just using your resources wisely.
Ambush	Rare	Spell	Rogue	2	Secret: After your opponent plays a minion, summon a 2/3 Ambusher with Poisonous. Clip-clop clip-clop CLIP-CLOP STAB!
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!"
Showing all 4 cards

Wild format

This section contains information exclusive to Wild format.

Name / Desc	Rarity	Type	Class	Cost	Description
Cheat Death	Common	Spell	Rogue	2	Secret: When a friendly minion dies, return it to your hand. It costs (2) less. Reported.
Sudden Betrayal	Common	Spell	Rogue	2	Secret: When a minion attacks your hero, instead it attacks one of its neighbours. You thought he was your bro-bold, but turns out he's your foe-bold.
Evasion	Epic	Spell	Rogue	2	Secret: After your hero takes damage, become Immune this turn. Works on weapons, missiles, and taxes.
Showing all 3 cards

Related cards[edit | edit source]

The following cards have specific synergy with Secrets, such as providing additional effects when Secrets are cast, or destroying Secrets already in play.

For cards which have synergy with spells in general, but not specifically with Secrets, see Spell-related.

Name / Desc	Rarity	Type	Subtype	Class	Cost	Atk	HP	Description
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!
Sunreaver Spy	Common	Minion	General	Any	2	2	3	Battlecry: If you control a Secret, gain +1/+1. She's watching. Always watching.
Hunter's Pack	Common	Spell		Hunter	3			Add a random Hunter Beast, Secret, and weapon to your hand. Oh look! It's a trap!
Cloud Prince	Common	Minion	Elemental	Mage	5	4	4	Battlecry: If you control a Secret, deal 6 damage. "In West Cloudidelphia, born and raised; flinging lightning for the rest of my days."
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."
Desperate Measures	Rare	Spell		Paladin	1			Twinspell Cast a random Paladin Secret. Desperate times call for disparate secrets.
Desperate Measures	Rare	Spell		Paladin	1			Cast a random Paladin Secret.
Secretkeeper	Rare	Minion	General	Any	1	1	2	Whenever a Secret is played, gain +1/+1. Where is Mankrik's wife? She'll never tell.
Arcane Flakmage	Rare	Minion	General	Mage	2	3	2	After you play a Secret, deal 2 damage to all enemy minions. Ancient pandaren proverb: He who is without secrets lacks flak.
Flare	Rare	Spell		Hunter	2			All minions lose Stealth. Destroy all enemy Secrets. Draw a card. Not only does it reveal your enemies, but it's also great for parties!
Mysterious Blade	Rare	Weapon		Paladin	2	2	2	Battlecry: If you control a Secret, gain +1 Attack. It knows every secret you have felt.
Phase Stalker	Rare	Minion	Beast	Hunter	2	2	3	After you use your Hero Power, cast a Secret from your deck. It's not just a phase! I don't have to tell you anything! GAWSH!
Eaglehorn Bow	Rare	Weapon		Hunter	3	3	2	Whenever a friendly Secret is revealed, gain +1 Durability. First Lesson: Put the pointy end in the other guy.
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.
Ethereal Arcanist	Rare	Minion	General	Mage	4	3	3	If you control a Secret at the end of your turn, gain +2/+2. The ethereals are wrapped in cloth to give form to their non-corporeal bodies. Also because it's nice and soft.
Hyena Alpha	Rare	Minion	Beast	Hunter	4	3	3	Battlecry: If you control a Secret, summon two 2/2 Hyenas. Everything the sun touches is ours—so long as it's already dead.
SI:7 Infiltrator	Rare	Minion	General	Any	4	5	4	Battlecry: Destroy a random enemy Secret. What will she destroy? It's a secret!
Apexis Smuggler	Epic	Minion	General	Mage	2	2	3	After you play a Secret, Discover a spell. "S-secrets? I don't have any! Whoa, look, a spell!"
Shadowjeweler Hanar	Legendary	Minion	General	Rogue	2	1	4	After you play a Secret, Discover a Secret from a different class. What is a shadowjeweler? A miserable little pile of secrets.
Commander Rhyssa	Legendary	Minion	General	Paladin	3	4	3	Your Secrets trigger twice. Two people can keep a secret as long as neither of them are Commander Rhyssa.
Showing all 20 cards

Wild format

This section contains information exclusive to Wild format.

Name / Desc	Rarity	Type	Subtype	Class	Cost	Atk	HP	Description
Kabal Lackey	Common	Minion	General	Mage	1	2	1	Battlecry: The next Secret you play this turn costs (0). I'll tell you one thing he doesn't lack: GUMPTION.
Secret Plan	Common	Spell		Hunter	1			Discover a Secret. The secret is... There is no plan!
Arcanologist	Common	Minion	General	Mage	2	2	3	Battlecry: Draw a Secret from your deck. What did you draw? Shhhh… it’s a secret.
Hydrologist	Common	Minion	Murloc	Paladin	2	2	2	Battlecry: Discover a Secret. Murloc hydrologists are pretty rare. Most murloc undergrads pick computer science.
Mad Scientist	Common	Minion	General	Any	2	2	2	Deathrattle: Put a Secret from your deck into the battlefield. His mother wanted him to be a mage or a warlock, but noooooooo, he had to go and be a scientist like his father.
Medivh's Valet	Common	Minion	General	Mage	2	2	3	Battlecry: If you control a Secret, deal 3 damage. "Magus Medivh sir, I've brought the flaming balloons, as you requested."
Cloaked Huntress	Common	Minion	General	Hunter	3	3	4	Your Secrets cost (0). She's practically GIVING your secrets away!
Illuminator	Rare	Minion	General	Any	3	2	4	If you control a Secret at the end of your turn, restore 4 Health to your hero. "LUMOS!" is not what they yell. What do you think this is, Hogwarts?
Bellringer Sentry	Rare	Minion	General	Paladin	4	3	4	Battlecry and Deathrattle: Put a Secret from your deck into the battlefield. Who are you? Eh, none of my business.
Eater of Secrets	Rare	Minion	General	Any	4	2	4	Battlecry: Destroy all enemy Secrets. Gain +1/+1 for each. You don't want to be around after it has eaten an explosive trap. You thought Sludge Belcher was bad...
Kezan Mystic	Rare	Minion	General	Any	4	4	3	Battlecry: Take control of a random enemy Secret. They pretend to be wise and enlightened, but they mostly just hate to be left out of a secret.
Avian Watcher	Rare	Minion	General	Any	5	3	6	Battlecry: If you control a Secret, gain +1/+1 and Taunt. He mostly watches light romantic comedies.
Chief Inspector	Rare	Minion	General	Any	5	4	6	Battlecry: Destroy all enemy Secrets. Empty your pockets, I know you’ve got a Wandering Monster in there!
Emerald Spellstone	Rare	Spell		Hunter	5			Summon three 3/3 Wolves. (Play a Secret* to upgrade.)*
Lesser Emerald Spellstone	Rare	Spell		Hunter	5			Summon two 3/3 Wolves. (Play a Secret* to upgrade.)* An emerald stone for Tauren hands Who sought its strength to save their lands Their tribes now lost, their rage released Who's hunting now? And who's the beast?
Kabal Crystal Runner	Rare	Minion	General	Mage	6	5	5	Costs (2) less for each Secret you've played this game. "Listen, I can cut you in on a little of this premium mana, but you can't tell my boss."
Masked Contender	Epic	Minion	General	Any	3	2	4	Battlecry: If you control a Secret, cast a Secret from your deck. Knew Mysterious Challenger back when he was a Mysterious Squire.
Arcane Keysmith	Epic	Minion	General	Mage	4	2	2	Battlecry: Discover a Secret. Put it into the battlefield. She sells all manner of keys: from A flat to G sharp.
Mysterious Challenger	Epic	Minion	General	Paladin	6	6	6	Battlecry: Put one of each Secret from your deck into the battlefield. He may sound surly and antisocial, but he's actually just really shy.
Glacial Mysteries	Epic	Spell		Mage	8			Put one of each Secret from your deck into the battlefield. The secret is in the frosting.
Professor Putricide	Legendary	Minion	General	Hunter	4	5	4	After you play a Secret, put another random Hunter Secret into the battlefield. Among his more notable inventions: A tentacle-groomer, a plague that would wipe out all life on Azeroth, and a fidget spinner.
Subject 9	Legendary	Minion	Beast	Any	5	4	4	Battlecry: Draw 5 different Secrets from your deck. The original clever girl.
Showing all 22 cards

History[edit | edit source]

Secrets likely evolved from the cancelled "Combat Tricks" feature, removed early in the game's development. Similar to Secrets, these allowed players with active Combat Tricks who attacked their opponent to play a card on their opponent's turn, disrupting their play. Ultimately it was found that removing Combat Tricks actually made the game more fun, as well as further improving its speed. It seems the idea was not wholly abandoned though, since Secrets appear to represent a weaker form of the same mechanic.

Rogues originally had Secrets, but this was moved to Paladins during the game's alpha. The designers were struggling to give the Paladins a class identity while Rogues already had "a ton a sneaky things" with Backstab, Stealth and Combo effects. The change served to refocus each class' strategic focus, helping to give Paladins "something that was their own thing" and giving Rogues a clearer picture of what the class wanted to do.^[14]^[15] Over 3 years later, Secrets were re-introduced to Rogues in the Kobolds and Catacombs expansion. According to Game Designer Peter Whalen, the developers wanted to capture the fantasy of each specific class in the expansion, with Secrets making a lot of thematical sense for the "sneaky and tricky" Rogues, and "now lots of classes have different stuff going on", allowing for the re-introduction of Rogue Secrets.^[15]

The apparent original line-up of Rogues, Hunters and Mages may reflect a connection between Secrets and the Stealth/Camouflage/Invisibility mechanics in World of Warcraft, with these the only classes (except Druids in cat form) capable of employing such mechanics to ambush their opponents, similar to the function of Secrets in Hearthstone. In this respect Secrets are more similar to World of Warcraft Stealth than the Hearthstone Stealth ability itself, allowing the player to genuinely surprise the opponent.

Patch 1.0.0.4944[edit | edit source]

With Patch 1.0.0.4944, secrets were made to only be triggered on the opponent's turn. Prior to this, players could intentionally trigger their own secrets, allowing them to make use of them as additional spell effects, rather than counter-abilities.

While most secrets were unaffected, some interesting play options were intentionally removed by this change. The developers stated that the ability to trigger your own secrets was preventing them from creating new and powerful secrets, due to being easily triggered by the controlling player prior to this change. While removing certain strategic possibilities, this change was therefore intended to allow for the creation of a diverse range of new secrets. The subsequently announced Curse of Naxxramas mage secret Duplicate was confirmed as an example of a card that the earlier design would have prevented from being implemented.^[16]

This rule was accepted as standard for all Secrets, until nearly 18 months later when The Grand Tournament added a specific exception, in the form of Competitive Spirit.

Trivia[edit | edit source]

Having 5 secrets active can partially hide a hero's armor total, if playing on the desktop game client.^[17]

Patch changes[edit | edit source]

Patch 10.0.0.22611 (2017-12-06): The first Rogue Secrets are added.
Patch 3.0.0.9786 (2015-08-18): Competitive Spirit is added, the first Secret to specifically break the rule that Secrets can only activate on the opponent's turn.
Patch 1.0.0.4944 (2014-03-11): Secrets can now only activate on your opponent’s turn.