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

Kiki-Jiki, Mirror Breaker

Phyrexian Altar

Faceless Butcher

How it works

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.