Kiki-Jiki, Mirror Breaker + Glorious Protector + Phantom Train

Kiki-Jiki, Mirror Breaker

Glorious Protector

Phantom Train

How it works

1. Activate Kiki-Jiki by tapping it, creating a token copy of Glorious Protector.
2. When the Glorious Protector token enters the battlefield, it triggers, exiling Kiki-Jiki until Glorious Protector leaves the battlefield.
3. Activate Phantom Train by sacrificing the Glorious Protector token.
4. When the Glorious Protector token dies, Kiki-Jiki is returned from exile to the battlefield.
5. Resolve the Phantom Train ability.
6. Repeat.

This ingenious loop turns Kiki-Jiki, Mirror Breaker and Glorious Protector into a self-sustaining engine by utilizing Phantom Train's sacrifice outlet. When Kiki-Jiki copies Glorious Protector, the resulting token exiles Kiki-Jiki, but sacrificing that token to Phantom Train immediately returns Kiki-Jiki to the battlefield. Because Phantom Train conveniently transforms itself into a Spirit artifact creature in addition to its other types while fueling the loop, it happily accepts the sacrifices and grows fat with infinite +1/+1 counters.