the front side of Undead Sprinter
the back of a classic MtG card
the front side of Runaway Steam-Kin
the back of a classic MtG card
the front side of Phyrexian Altar
the back of a classic MtG card

Color Identity: B, R

Initial Card State

  1.  All permanents on the battlefield.

Notable Prerequisites

  1. A non-Zombie creature has died this turn.

Mana Needed

  1. one black or red manaone black or red manaone black or red mana, minus one black or red mana for each +1/+1 counter on Runaway Steam-Kin available.

Steps

  1. Activate Phyrexian Altar by sacrificing Undead Sprinter, adding one black or red mana.
  2. If Runaway Steam-Kin has three or more +1/+1 counters on it, activate it by removing three +1/+1 counters from it, adding one red manaone red manaone red mana.
  3. Cast Undead Sprinter from your graveyard by paying one black manaone red mana.
  4. Runaway Steam-Kin triggers, putting a +1/+1 counter on it.
  5. Repeat from step 2.

Results

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