the front side of Reassembling Skeleton
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.

Steps

  1. Activate Phyrexian Altar by sacrificing Reassembling Skeleton, adding ({B} magic symbol)  .
  2. Pawn of Ulamog triggers, creating a 0/1 Eldrazi Spawn creature token with "Sacrifice this creature: add ({C} magic symbol)  ".
  3. Activate the Eldrazi Spawn by sacrificing it, adding ({C} magic symbol)  .
  4. Activate Reassembling Skeleton by paying ({1} magic symbol)  ({B} magic symbol)  , returning it from your graveyard to the battlefield tapped.
  5. Repeat.

Results

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