Umbral Collar Zealot, Wingrattle Scarecrow, and Mm'menon, Uthros Exile

Prerequisites

• Umbral Collar Zealot on the battlefield
• Wingrattle Scarecrow on the battlefield
• Mm'menon, Uthros Exile on the battlefield

Steps

1. Activate Umbral Collar Zealot by sacrificing Wingrattle Scarecrow When Wingrattle Scarecrow dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
2. When Wingrattle Scarecrow enters, Mm'menon triggers, putting a +1/+1 counter on Wingrattle Scarecrow Resolve the Umbral Collar Zealot ability
3. Repeat

Results

• Infinite artifact ETB
• Infinite artifact LTB
• Infinite artifact sacrifice triggers
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite surveil