Requiem Angel, Conspiracy, and Umbral Collar Zealot

Prerequisites

• Requiem Angel on the battlefield
• Conspiracy on the battlefield
• Umbral Collar Zealot on the battlefield

Steps

1. Activate Umbral Collar Zealot by sacrificing another creature
2. When the creature dies, Requiem Angel triggers, creating a 1/1 Soldier creature token
3. The token won't be a Soldier due to Conspiracy
4. Resolve the Umbral Collar Zealot ability, causing you to surveil 1
5. Repeat

Results

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