Color Identity: U, B, R

Prerequisites

  1.  
    Grimgrin, Corpse-Born
    Grimgrin     and
    Elemental Mastery
    Elemental Mastery     on the battlefield.
  2. Elemental Mastery
    Elemental Mastery     attached to
    Grimgrin, Corpse-Born
    Grimgrin    .
  3. Grimgrin, Corpse-Born
    Grimgrin     is untapped and does not have summoning sickness.

Steps

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

Results

  1. Infinite +1/+1 counters on
    Grimgrin, Corpse-Born
    Grimgrin    .
  2. Infinite creature tokens with haste.
  3. Infinite ETB.
  4. Infinite tap triggers.

Metadata

  1. In 40 decks according to EDHREC.
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