Kiki-Jiki, Mirror Breaker, Ashnod's Altar, and Faceless Butcher

Prerequisites

• Kiki-Jiki, Mirror Breaker on the battlefield
• Ashnod's Altar on the battlefield
• Faceless Butcher on the battlefield

Steps

1. Activate Kiki-Jiki by tapping it, creating a token copy of Faceless Butcher
2. When the Faceless Butcher token enters the battlefield, it triggers, exiling Kiki-Jiki until Faceless Butcher leaves the battlefield
3. Activate Ashnod's Altar by sacrificing the Faceless Butcher token, adding
4. When the Faceless Butcher token dies, it triggers, returning Kiki-Jiki from exile to the battlefield
5. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite colorless mana