Color Identity: U, B, R

Prerequisites

  1.  
    Mairsil, the Pretender
    Mairsil     and
    Urabrask the Hidden
    Urabrask the Hidden     on the battlefield.
  2.  All other cards in exile.
  3. Mairsil, the Pretender
    Mairsil     does not have a -1/-1 counter on it.

Steps

  1. Activate
    Mairsil, the Pretender
    Mairsil     using
    Cauldron of Souls
    Cauldron of Souls    ' ability by tapping it, giving itself persist until end of turn.
  2. Activate
    Mairsil, the Pretender
    Mairsil     using
    Blood Vassal
    Blood Vassal    's ability by sacrificing it, adding ({B} magic symbol)  ({B} magic symbol)  .
  3. When
    Mairsil, the Pretender
    Mairsil     dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  4. Activate
    Mairsil, the Pretender
    Mairsil     using
    Carnifex Demon
    Carnifex Demon    's ability by paying ({B} magic symbol)   and removing a -1/-1 counter from it, putting a -1/-1 counter on each other creature.
  5. Repeat.

Results

  1. Infinite black mana.
  2. Infinite death triggers.
  3. Infinite ETB.
  4. Infinite LTB.
  5. Infinite sacrifice triggers.

Metadata

  1. In 1 deck according to EDHREC.
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