the front side of Bloodsoaked Champion
the back of a classic MtG card
the front side of Phyrexian Altar
the back of a classic MtG card
the front side of Pawn of Ulamog
the back of a classic MtG card

Color Identity: B

Initial Card State

  1.  All permanents on the battlefield.

Notable Prerequisites

  1. You attacked with a creature this turn.

Steps

  1. Activate Phyrexian Altar by sacrificing Bloodsoaked Champion, adding one black mana.
  2. Pawn of Ulamog triggers, creating a 0/1 Eldrazi Spawn token.
  3. Activate the Eldrazi Spawn by sacrificing it, adding one colorless mana.
  4. Activate Bloodsoaked Champion by paying one generic manaone black mana, returning it to the battlefield.
  5. Repeat.

Results

  1. Infinite death triggers.
  2. Infinite creature ETB.
  3. Infinite creature LTB.
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