Disa the Restless, Mimic Vat, and Grimgrin, Corpse-Born

Prerequisites

• Disa the Restless on the battlefield
• Mimic Vat on the battlefield
• Grimgrin, Corpse-Born on the battlefield

Steps

1. Activate Grimgrin by sacrificing a nontoken Lhurgoyf
2. When the Lhurgoyf dies, Mimic Vat triggers, exiling the Lhurgoyf from your graveyard and returning the Lhurgoyf that was exiled to your graveyard
3. Disa's first ability triggers, putting the Lhurgoyf from your graveyard onto the battlefield
4. Resolve the Grimgrin ability, putting a +1/+1 counter on it
5. Repeat

Results

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