Kiki-Jiki, Mirror Breaker, Lightning Crafter, and Altar of Dementia

Prerequisites

• Kiki-Jiki, Mirror Breaker on the battlefield
• Lightning Crafter in hand
• Altar of Dementia on the battlefield
• available

Steps

1. Cast Lightning Crafter by paying
2. When Lightning Crafter enters the battlefield, its champion ability triggers
3. Holding priority, activate Kiki-Jiki by tapping it, creating a token copy of Lightning Crafter with haste
4. When the token Lightning Crafter enters the battlefield, its champion ability triggers, exiling Kiki-Jiki
5. Activate the token Lightning Crafter by tapping it, dealing 3 damage to any target
6. Activate Altar of Dementia by sacrificing the token Lightning Crafter
7. When the token Lightning Crafter leaves the battlefield, it triggers, returning Kiki-Jiki from exile to the battlefield
8. Resolve the Altar of Dementia ability
9. Repeat from step 3

Results

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