Kiki-Jiki, Mirror Breaker, Phyrexian Altar, and Faceless Butcher

Prerequisites

• Kiki-Jiki, Mirror Breaker on the battlefield
• Phyrexian 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 Phyrexian Altar by sacrificing the Faceless Butcher token, adding one mana of any color
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 colored mana
• Infinite sacrifice triggers
• Infinite death triggers