Kiki-Jiki, Mirror Breaker, Lightning Crafter, and Roaming Throne

Prerequisites

• Kiki-Jiki, Mirror Breaker on the battlefield
• Lightning Crafter in hand
• Roaming Throne on the battlefield
• available

Steps

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

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite damage