Echo

Echo
Repeatable the turn you play this. Copies can't cost less than (1).

An Echo copy of Warpath.

Echo is an ability whereby the card can be played multiple times in one turn. This is accomplished through copying the card to the user's hand until the end of their turn. It was informally introduced in Kobolds & Catacombs as Unstable Evolution, and officially debuted in The Witchwood.

Echo copies have a blue glow and black smoke around them.

Notes

• Echo works by placing a new copy of the card into your hand, which is removed at the end of your turn.
• This effect is triggered by echoed copies as well, meaning that you may keep deploying until you run out of mana.
• Echoed copies are always the original version of the card. Copies will not take in-hand stat or cost changes, unless it's being provided by an aura (like Summoning Portal or Sorcerer's Apprentice).
  • Example: If Dire Frenzy is played on Hunting Mastiff and a buffed Hunting Mastiff is later drawn and played, the first Hunting Mastiff will receive the +3/+3 buff but the rest of the Hunting Mastiffs played using Echo will not receive the buff.
• If a spell with Echo is cast by another card such as Yogg-Saron or Scroll of Wonder, you will not get another copy to your hand, because Echo cards must be played in order to receive a copy.
• Echo is resolved after Deathrattles.
  • Example: Using Warpath to destroy Mecha'thun with an empty hand and deck will successfully destroy the opposing hero.
• The mana cost of Echo cards cannot be reduced below 1 mana.

Cards with Echo

This section lists cards which have the ability to Echo when played.

Collectible

Wild format

 This section contains information exclusive to Wild format.

Name / Desc	Rarity	Type	Subtype	Class	Cost	Atk	HP	Description
Cheap Shot	Common	Spell		Rogue	2			Echo Deal 2 damage to a minion. 50% off. Every shot must go!
Ghost Light Angler	Common	Minion	Murloc	Shaman	2	2	2	Echo BoOooOogrglgrlgrlooOoOoo!
Hunting Mastiff	Common	Minion	Beast	Hunter	2	2	1	Echo Rush "Shh! You're going to start a howl!"
Sound the Bells!	Common	Spell		Paladin	2			Echo Give a minion +1/+2. Weirdly, the bells stop ringing after 5.
Squashling	Common	Minion	General	Priest	2	2	1	Echo Battlecry: Restore 2 Health. Everyone hail to the squashling song!
Warpath	Common	Spell		Warrior	2			Echo Deal 1 damage to all minions. "Left, right, left, right, there's none of the enemy left… Right?"
Walnut Sprite	Common	Minion	General	Any	3	3	3	Echo How do you make a walnut laugh? Crack it up!
Curse of Weakness	Rare	Spell		Warlock	2			Echo Give all enemy minions -2 Attack until your next turn. Warlocks refer to this as a "balance change."
Pick Pocket	Rare	Spell		Rogue	2			Echo Add a random card to your hand (from your opponent's class). He'll pick anyone's pocket, except a gnome's. He'd never stoop so low.
Phantom Militia	Rare	Minion	General	Any	3	2	4	Echo Taunt Recruited from the Gilnean opera house.
Face Collector	Legendary	Minion	General	Rogue	3	2	2	Echo Battlecry: Add a random Legendary minion to your hand. “I'll trade you a Malfurion for an Anduin.”
SN1P-SN4P	Legendary	Minion	Mech	Any	3	2	3	Magnetic, Echo Deathrattle: Summon two 1/1 Microbots. "It's gonna be snip this, snap that. Bada-snip, bada-snap!"
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Uncollectible

Wild format

 This section contains information exclusive to Wild format.

Name / Desc	Rarity	Type	Subtype	Class	Cost	Atk	HP	Description
Transfer Student	Epic	Minion	General	Any	2	2	2	Echo Rush
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Sources of Echo

Echo-generating cards

This section lists cards which generate cards that have the ability to Echo.

Name / Desc	Rarity	Type	Subtype	Class	Cost	Atk	HP	Description
Transfer Student	Epic	Minion	General	Any	2	2	2	This has different effects based on which game board you're on. Oh, the places you'll go! There is so much to fight! There are boards to be explored. There are dreams to take flight.
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Echo-granting cards

This section lists cards which grant the Echo ability to other cards or to itself.

Wild format

 This section contains information exclusive to Wild format.

Name / Desc	Rarity	Type	Subtype	Class	Cost	Atk	HP	Description
Glinda Crowskin	Legendary	Minion	General	Warlock	6	3	7	Minions in your hand have Echo. Summon an unlimited* number of minions!** *Six **Wisps
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Related cards

Wild format

 This section contains information exclusive to Wild format.

Name / Desc	Rarity	Type	Subtype	Class	Cost	Atk	HP	Description
Mistwraith	Rare	Minion	General	Rogue	4	3	5	Whenever you play an Echo card, gain +1/+1. One little Mistwraith sitting in a tree. M-I-S-T-I-N-G.
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Cards with the Echo mechanic

When Echo was announced, Blizzard confirmed they would not be modifying already-existing cards to have the updated keyword because the mechanics are not completely identical to Echo. The following cards have the mechanic without the keyword.

History

Echo was inspired by "Ghostly", an earlier mechanic experimented with during the development of The Witchwood, when the expansion was instead called Murder on the Gilnean Express. Cards with Ghostly discarded themselves at the end of the player's turn. Cards that only had Ghostly as their card text essentially required the player to play the card the turn it was drawn, while other cards added Ghostly copies of themselves to the player's hand. As Blizzard kept iterating, they found that the most fun version of Ghostly was the cards that replicated themselves, as they could both be useful during the early game and could be powerful during the late game if the player sunk extra mana into them. Furthermore, deciding how long to hold on to them to eke out more value proved to be skill-testing and interesting. As the setting of the expansion evolved from a train to a haunted forest, Ghostly "became more and more the perfect flavor for the set", eventually becoming Echo.

Trivia

• Although Blizzard did not add Echo to Unstable Evolution or Witch's Brew, it was given to SN1P-SN4P. This is likely because SN1P-SN4P rotated out of Standard alongside the other Echo cards, meaning there won't be any confusion.
• Prior to Echo's nerf, it was possible to play infinite copies of an Echo card in a single turn if there was a cost reduction effect for both the original card and its subsequent copies, such as Echo spells being reduced to 0 mana by Millhouse Manastorm. SN1P-SN4P was a notable offender for this condition as its Magnetic meant that it was possible to play infinite SN1P-SN4Ps without running out of board space. This was the reason that Reckless Experimenter was nerfed to be unable to reduce Deathrattle minions below 1 (as SN1P-SN4P also has Deathrattle), but SN1P-SN4P Warlock managed to do so anyway by using Mechwarper and Summoning Portal to play as many SN1P-SN4Ps as possible in a single turn, an exploit so prominent that it was the reason that Echo was nerfed in the first place. With its limitation already applied to all Echo cards, Reckless Experimenter's nerf was reverted as well.
  • "Repeatable this turn" cards are unaffected by the Echo nerf so they can still be played indefinitely, but the ability is exclusive to Shaman cards. However, this interaction can still be seen upon somehow gaining a Sorcerer's Apprentice or Radiant Elemental.

Patch changes

• Patch 16.0.0.37060 (2019-12-05): Copies of cards with the Echo keyword can no longer cost less than (1).
• Patch 11.0.0.23966 (2018-04-10): Added.

References

	Cards
By type	Hero card Minion (Permanent) Spell Weapon
By class	Demon Hunter Druid Hunter Mage Paladin Priest Rogue Shaman Warlock Warrior
By minion type	All Beast Demon Dragon Elemental Mech Murloc Pirate Totem General
By ability	Evergreen keywords	Battlecry Choose One Combo Deathrattle Discover Divine Shield Freeze Lifesteal Outcast Overload Poisonous Rush Secret Silence Spell Damage Stealth Taunt Windfury
	Other keywords	Adapt Casts When Drawn Charge Choose Twice Corrupt Dormant Echo Immune Inspire Invoke Jade Golem Lackey Magnetic Mega-Windfury Overkill Passive Quest Reborn Recruit Sidequest Spare Part Spellburst Start of Game Twinspell
	Other abilities	Can't attack Cast spell Copy Deal damage Destroy Discard Draw cards Elusive Enrage Equip Force attack Forgetful Gain Armor Generate Highlander Joust Modify cost Put into battlefield Put into hand Recurring Refresh Mana Remove from deck Replace Restore Health Return to hand Shuffle into deck Spend mana Summon Take control Transform Unlimited attacks Upgradable
	Non-Constructed	Auto-Attack Auto-cast Shrine Start of Combat
By effect type	Area of effect In-deck effect In-hand effect On-discard effect On-draw effect Ongoing effect Positional effect Random effect Resurrection effect Triggered effect
By card set	Standard	Basic Classic Rise of Shadows Saviors of Uldum Descent of Dragons Galakrond's Awakening Demon Hunter Initiate Ashes of Outland Scholomance Academy Madness at the Darkmoon Faire
	Wild	Hall of Fame Curse of Naxxramas Goblins vs Gnomes Blackrock Mountain Grand Tournament The League of Explorers Whispers of the Old Gods One Night in Karazhan Mean Streets of Gadgetzan Journey to Un'Goro Knights of the Frozen Throne Kobolds & Catacombs The Witchwood The Boomsday Project Rastakhan's Rumble
By rarity	Free Common Rare Epic Legendary