Danitha, Benalia's Hope, Umbral Collar Zealot, and Fool's Demise

Prerequisites

• Danitha, Benalia's Hope on the battlefield
• Umbral Collar Zealot on the battlefield
• Fool's Demise on the battlefield

Steps

1. Activate Umbral Collar Zealot by sacrificing Danitha When Danitha dies, Fool's Demise triggers, returning Danitha from your graveyard to the battlefield tapped
2. When Danitha enters the battlefield, it triggers, returning Fool's Demise from your graveyard to the battlefield attached to Danitha
3. Resolve the Umbral Collar Zealot ability
4. Repeat

Results

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