the front side of Mairsil, the Pretender
the back of a classic MtG card
the front side of Endling
the back of a classic MtG card
the front side of Blood Pet
the back of a classic MtG card
the front side of Triskelion
the back of a classic MtG card

Color Identity: U, B, R

Initial Card State

  1.  Mairsil on the battlefield.
  2.  All other permanents in exile.

Notable Prerequisites

  1. Mairsil does not have a +1/+1 counter on it.

Mana Needed

  1. one black mana available.

Steps

  1. Activate Mairsil using Endling's third ability by paying one black mana, giving Mairsil undying until end of turn.
  2. Activate Mairsil using Blood Pet's ability by sacrificing it, adding one black mana.
  3. Mairsil dies, triggering its undying ability, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  4. Activate Mairsil using Triskelion's ability by removing a +1/+1 counter from it, dealing 1 damage to any target.
  5. Repeat.

Results

  1. Infinite damage.
  2. Infinite death triggers.
  3. Infinite creature ETB.
  4. Infinite creature LTB.
  5. Infinite creature sacrifice triggers.
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