Kiki-Jiki, Mirror Breaker + Agatha's Soul Cauldron + Goblin Sharpshooter

Kiki-Jiki, Mirror Breaker

Agatha's Soul Cauldron

Goblin Sharpshooter

How it works

1. Activate Goblin Sharpshooter using Kiki-Jiki's ability by tapping it, creating a token copy of Goblin Sharpshooter with haste.
2. Activate the token Goblin Sharpshooter by tapping it, dealing 1 damage to itself.
3. The token Goblin Sharpshooter dies as a state-based action due to having 0 toughness, triggering the nontoken Goblin Sharpshooter, untapping the nontoken Goblin Sharpshooter.
4. Repeat.

This clever loop turns Kiki-Jiki, Mirror Breaker into a lethal engine by channeling its token-copying power through Agatha's Soul Cauldron. By exiling Goblin Sharpshooter into the Cauldron and placing a +1/+1 counter on Kiki-Jiki, the legendary goblin gains the Sharpshooter's activated ability—allowing Kiki-Jiki to repeatedly make haste-granted copies of itself that ping themselves to death, triggering the original Sharpshooter's untap ability endlessly.