Brotherhood Outcast, Umbral Collar Zealot, and False Demise

Prerequisites

• Brotherhood Outcast on the battlefield
• Umbral Collar Zealot on the battlefield
• False Demise on the battlefield

Steps

1. Activate Umbral Collar Zealot by sacrificing Brotherhood Outcast
2. When Brotherhood Outcast dies, False Demise triggers, returning Brotherhood Outcast from your graveyard to the battlefield
3. When Brotherhood Outcast enters the battlefield, it triggers, returning False Demise from your graveyard to the battlefield attached to Brotherhood Outcast
4. Resolve the Umbral Collar Zealot ability
5. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite surveil 1