Lurrus of the Dream-Den, Flickering Hound, Grimgrin, Corpse-Born, and Shield Sphere

Prerequisites

• Lurrus of the Dream-Den on the battlefield
• Flickering Hound on the battlefield
• Grimgrin, Corpse-Born on the battlefield
• Shield Sphere in hand or in the graveyard

Steps

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

Results

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