Kiki-Jiki, Mirror Breaker + Thermopod + Lumbering Battlement

Kiki-Jiki, Mirror Breaker

Thermopod

Lumbering Battlement

How it works

1. Activate Kiki-Jiki by tapping it, creating a token copy of Lumbering Battlement.
2. When the Lumbering Battlement token enters the battlefield, it triggers, exiling Kiki-Jiki until Lumbering Battlement leaves the battlefield.
3. Activate Thermopod by sacrificing the Lumbering Battlement token.
4. When the Lumbering Battlement token dies, Kiki-Jiki is returned from exile to the battlefield.
5. Repeat.

This loop turns Kiki-Jiki, Mirror Breaker and Lumbering Battlement into a self-sustaining engine by abusing the Battlement's exile trigger to repeatedly blink Kiki-Jiki safely out of harm's way. Every time the token copy of Lumbering Battlement enters the battlefield, it eats Kiki-Jiki, but sacrificing that token to Thermopod immediately frees Kiki-Jiki to repeat the process. Because Thermopod also conveniently converts each sacrificed token into a red mana source, you get an endless cascade of entry and death triggers while generating infinite red mana.