Kiki-Jiki, Mirror Breaker, Thornbite Staff, and Pandemonium

Prerequisites

• Kiki-Jiki, Mirror Breaker on the battlefield
• Thornbite Staff on the battlefield
• Pandemonium on the battlefield

Steps

1. Activate Kiki-Jiki by tapping it, creating a token copy of a nonlegendary creature whose base power is equal to or greater than its toughness with haste
2. When the creature token enters the battlefield, Pandemonium triggers, dealing damage equal to the creature token's power to the creature token
3. The creature token dies as a state-based action due to having 0 or less toughness, triggering Kiki-Jiki, untapping Kiki-Jiki
4. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB