Chainer, Dementia Master
K'rrik, Son of Yawgmoth
Gray Merchant of Asphodel
Goblin Bombardment

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.
Your life total is at least ten. Your devotion to black is at least ten or you have at least two opponents.

   Steps

How does this combo work?
1
Activate Goblin Bombardment by sacrificing Gray Merchant, dealing 1 damage to any target.
2
Activate Chainer by paying nine life, returning Gray Merchant from your graveyard to the battlefield as a Nightmare in addition to its other creature types.
3
Gray Merchant enters the battlefield, causing each opponent to lose life equal to your devotion to black and causing you to gain life equal to the amount of life lost this way.
4
Repeat.

   Results

What do I get from this combo?
Infinite damage
Infinite death triggers
Infinite ETB
Infinite lifegain
Infinite lifegain triggers
Infinite lifeloss
Infinite LTB
Infinite sacrifice triggers
Put all creature cards from all graveyards onto the battlefield under your control
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