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Reckless Experimenter
49416 • BOT_566
BOT 566.png
Dimensions: Full330 x 410px
BOT 566 Premium1.png
Dimensions: Full330 x 410px
Set:The Boomsday ProjectThe Boomsday Project
Cost:5 Mana icon.png
Attack:4 Attack icon.png
Health:6 Health
Artist:Zoltan Boros
Deathrattle minions you play cost (3) less, but die at the end of the turn.
Flavor text

It's hard to call her reckless when it's clear she knows what she's doing.

Referenced tags
Boolean tags
Wiki tags
Destroy, Increment attribute, Modify cost
Wiki referenced tags
Deathrattle-related, Ongoing effect
External links


Reckless Experimenter is an epic priest minion card, from The Boomsday Project set.

How to get[]

Auto-detected sources
Card packs
The Boomsday Project Pack
Wild Pack
Regular, Golden1~2
Crafting400 dustdustRegular1
Crafting1600 dustdustGolden1


  • Reckless Experimenter uses an Aura to reduce cost, but applies an Enchantment for its destruction effect. The enchantment will kill any Deathrattle minions you play regardless of whether the Experimenter is still alive at the end of your turn.


Reckless Experimenter can be used as a way to cheat out Deathrattle effects, bypassing the usual need to kill the minion off while also providing a hefty mana discount. Since any minions you play will cost card advantage, it works best with cards that produce minions, such as Twilight Summoner, Haunted Creeper, or Sylvanas Windrunner. Use this card with caution, since many Deathrattle minions aren't worth playing without the body they provide.

In Wild, Reckless Experimenter is best used to activate Mecha'thun. See the Mecha'thun page for more specific information.




  • During the development of The Boomsday Project, Reckless Experimenter used to cause minions to die immediately upon being played, until Chakki discovered a one turn kill combo which used Reckless Experimenter, Knife Juggler, Dead Ringer, and Spirit of the Dead from the then-upcoming Rastakhan's Rumble set to create an infinite draw and damage engine. When Dead Ringer was played, it would immediately die due to Reckless Experimenter, causing Spirit of the Dead to shuffle a copy of Dead Ringer into the player's deck. Dead Ringer's Deathrattle would then trigger, drawing the copy. This allowed the player to play Dead Ringer over and over again, repeatedly triggering Knife Juggler's damaging effect. This led to Reckless Experimenter being changed to kill minions at the end of the turn instead of instantly.[1]
  • Shortly after SN1P-SN4P was announced for the Rise of the Mech event, players noticed a potentially deadly synergy with Reckless Experimenter, which would allow a player to do unlimited early-game burst damage if they had a single Mech on the board. Blizzard responded by announcing that with the same patch, Reckless Experimenter would be modified so that it could not reduce a card's mana cost below 1.[2] After the Echo keyword was nerfed, the change was no longer needed, so Reckless Experimenter was reverted.


Reckless Experimenter, full art

Patch changes[]

  • Ashes of Outland logo.pngPatch (2020-03-26): Text changed to: Deathrattle minions you play cost (3) less, but die at the end of the turn.
  • Rise of Shadows logo.png Patch (2019-06-03): Text changed to: Deathrattle minions you play cost (3) less, but die at the end of the turn. (Cost can't be reduced below 1.)
Commentary: We've decided to make a change to how Reckless Experimenter functions due to an unwanted interaction with SN1P-SN4P that allows for an early-game infinite damage combo in Priest decks.
  • The Boomsday Project logo.png Patch (2018-08-02): Added. Text read: Deathrattle minions you play cost (3) less, but die at the end of the turn.


  1. Liv Breeden on reddit. (2019-07-10). Retrieved on 2019-07-16.
  2. Upcoming Reckless Experimenter card change