Nim Deathmantle, Su-Chi, and Altar of Dementia

Prerequisites

• Nim Deathmantle on the battlefield
• Su-Chi on the battlefield
• Altar of Dementia on the battlefield

Steps

1. Activate Altar of Dementia by sacrificing Su-Chi
2. Su-Chi and Nim Deathmantle triggers
3. Resolve the Su-Chi trigger, adding
4. Resolve the Nim Deathmantle trigger, causing you to pay to return Su-Chi from your graveyard to the battlefield, and then attach Nim Deathmantle to it
5. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Su-Chi's power
6. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill