Lurrus of the Dream-Den, Flickering Hound, Grimgrin, Corpse-Born, and Kobolds of Kher Keep

Prerequisites

• Lurrus of the Dream-Den on the battlefield
• Flickering Hound on the battlefield
• Grimgrin, Corpse-Born on the battlefield
• Kobolds of Kher Keep in hand or in the graveyard

Steps

1. Cast Kobolds of Kher Keep by paying
2. Flickering Hound triggers, blinking Lurrus
3. Resolve the Kobolds of Kher Keep spell
4. Then, activate Grimgrin by sacrificing Kobolds of Kher Keep, putting a +1/+1 counter on Grimgrin and untapping it Repeat

Results

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