Kiki-Jiki, Mirror Breaker, Thornbite Staff, and Altar of Dementia

Prerequisites

• Kiki-Jiki, Mirror Breaker on the battlefield
• Thornbite Staff on the battlefield
• Altar of Dementia on the battlefield

Steps

1. Activate Kiki-Jiki by tapping it, creating a token copy of any nonlegendary creature you control that has power 1 or greater with haste
2. Activate Altar of Dementia by sacrificing the creature token
3. When the creature token dies, Kiki-Jiki triggers, untapping itself
4. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the creature token's power
5. Repeat

Results

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