Mortuary
Gray Merchant of Asphodel
Altar of Dementia
Bolas's Citadel

   Prerequisites

What do I need to start this combo?
Gray Merchant of Asphodel in hand or in your library (Gray Merchant of Asphodel on top of your library in your library).
All other permanents on the battlefield.
Your life total is at least 6 if Gray Merchant is on the top of your library, or you have 3 available otherwise.

   Steps

How does this combo work?
1
Cast Gray Merchant either from your hand by paying 3 or from the top of your library by paying 5 life.
2
When Gray Merchant enters, it triggers, causing each opponent to lose life equal to your devotion to black and causing you to gain life equal to the life lost this way.
3
Activate Altar of Dementia by sacrificing Gray Merchant.
4
When Gray Merchant dies, Mortuary triggers, putting Gray Merchant from your graveyard onto the top of your library.
5
Resolve the Altar of Dementia ability.
6
Repeat.

   Results

What do I get from this combo?
Infinite death triggers
Infinite ETB
Infinite lifegain
Infinite lifegain triggers
Infinite lifeloss
Infinite LTB
Infinite mill
Infinite sacrifice triggers
Infinite self-mill
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