Grimgrin, Corpse-Born + Presence of Gond

Grimgrin, Corpse-Born
Presence of Gond

Requires
Grimgrin, Corpse-Born must be on the battlefield. Presence of Gond must be on the battlefield. Presence of Gond attached to Grimgrin. Grimgrin does not have summoning sickness.
Steps
  1. Activate Grimgrin by tapping it, creating a 1/1 Elf Warrior creature token.
  2. Activate Grimgrin by sacrificing the Elf Warrior, untapping Grimgrin and putting a +1/+1 counter on it.
  3. Repeat.
Results
Infinite +1/+1 counters on Grimgrin. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.