Screams from Within, Bloodthrone Vampire, and Garrison Excavator

Prerequisites

• Screams from Within on the battlefield
• Bloodthrone Vampire on the battlefield
• Garrison Excavator on the battlefield

Steps

1. Activate Bloodthrone Vampire by sacrificing the creature that has Screams from Within attached
2. When the creature dies, Screams from Within triggers, returning it from your graveyard to the battlefield attached to another creature you control
3. Garrison Excavator triggers, creating a creature token
4. Resolve the Bloodthrone Vampire ability
5. Repeat

Results

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinitely large creature until end of turn