Ghired, Mirror of the Wilds, Thornbite Staff, and Bloodthrone Vampire

Prerequisites

• Ghired, Mirror of the Wilds on the battlefield
• Thornbite Staff on the battlefield
• Bloodthrone Vampire on the battlefield

Steps

1. Activate Ghired by tapping it, creating a token copy of any creature token you control that entered the battlefield this turn
2. Activate Bloodthrone Vampire by sacrificing the creature token
3. When the token dies, Ghired triggers, untapping itself
4. Resolve the Bloodthrone Vampire ability, causing target player to mill cards equal to the sacrificed creature's power
5. Repeat

Results

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