Kiki-Jiki, Mirror Breaker, Thornbite Staff, and Warstorm Surge

Prerequisites

• Kiki-Jiki, Mirror Breaker on the battlefield
• Thornbite Staff on the battlefield
• Warstorm Surge on the battlefield
• Thornbite Staff attached to Kiki-Jiki
• You control a nonlegendary creature whose base power is equal to or greater than its toughness

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, Warstorm Surge 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