Ghired, Mirror of the Wilds, and Grimgrin, Corpse-Born

Prerequisites

• Ghired, Mirror of the Wilds on the battlefield
• Grimgrin, Corpse-Born on the battlefield
• You control at least one creature token that entered the battlefield this turn
• Grimgrin is untapped and does not have summoning sickness

Steps

1. Activate Grimgrin by tapping it, creating a token copy of any creature token you control that entered the battlefield this turn
2. Activate Grimgrin by sacrificing the creature token created in step 1, untapping Grimgrin and putting a +1/+1 counter on it
3. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite +1/+1 counters on Grimgrin