Agatha's Soul Cauldron + Kiki-Jiki, Mirror Breaker + Sunstrike Legionnaire

Agatha's Soul Cauldron

Kiki-Jiki, Mirror Breaker

Sunstrike Legionnaire

How it works

1. Activate Sunstrike Legionnaire using Kiki-Jiki's ability by tapping it, creating a token copy of itself with haste.
2. When the Sunstrike Legionnaire token enters the battlefield, each other Sunstrike Legionnaire you cotnrol triggers, untapping themselves.
3. Repeat.
4. You may also target any nonlegendary creature you control.

This crafty setup relies on Agatha's Soul Cauldron to feed Kiki-Jiki, Mirror Breaker's activated ability into our board, granting it to a creature with the right toolkit. With that power bridged, Sunstrike Legionnaire steps in as the engine: its unique trigger untaps itself whenever another creature enters the battlefield. By using the copied Kiki-Jiki ability to make a hasty token of Sunstrike Legionnaire, that very entry triggers the original Sunstrike Legionnaire to untap, ready to tap again and repeat the loop.