Umbral Collar Zealot, Safehold Elite, and Hardened Academic

Prerequisites

• Umbral Collar Zealot on the battlefield
• Safehold Elite on the battlefield
• Hardened Academic on the battlefield

Steps

1. Activate Umbral Collar Zealot by sacrificing Safehold Elite
2. When Safehold Elite dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. Hardened Academic triggers, putting a +1/+1 counter on Safehold Elite
4. Resolve the Umbral Collar Zealot ability
5. Repeat

Results

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