the front side of Grimgrin, Corpse-Born
the back of a classic MtG card
the front side of Elemental Mastery
the back of a classic MtG card

Color Identity: U, B, R

Initial Card State

  1.  Grimgrin and Elemental Mastery on the battlefield (Grimgrin untapped).

Notable Prerequisites

  1. Elemental Mastery attached to Grimgrin.
  2. Grimgrin does not have summoning sickness.

Steps

  1. Activate Grimgrin by tapping it, creating a number of Elemental tokens with haste equal to Grimgrin's power.
  2. Activate Grimgrin by sacrificing an Elemental token to untap Grimgrin and to put a +1/+1 counter on Grimgrin.
  3. Repeat.

Results

  1. Infinite +1/+1 counters on Grimgrin.
  2. Infinite creature tokens with haste.
  3. Infinite ETB.

Metadata

  1. In 42 decks according to EDHREC.
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