Kiki-Jiki, Mirror Breaker, and Auton Soldier

Prerequisites

• Kiki-Jiki, Mirror Breaker on the battlefield
• Auton Soldier on the battlefield

Steps

1. Activate Kiki-Jiki by tapping it, creating a token copy of Auton Soldier that has haste
2. Choose to have Auton Soldier enter as a copy of Kiki-Jiki
3. Put the oldest Kiki-Jiki into the graveyard due to the legend rule
4. Repeat step 1 using the Auton Soldier token instead
5. Activate Auton Soldier by tapping it, creating a token copy of itself with haste that will be sacrificed at the next end step
6. The Auton Soldier token enters the battlefield as a nonlegendary copy of Kiki-Jiki with an additional +1/+1 counter
7. Activate the Auton Soldier token by tapping it, creating a token copy of itself with haste, exile that token at the end of turn
8. Repeat from step 2

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers
• Infinite tapped creature tokens until end of turn