Kiki-Jiki, Mirror Breaker + Lightning Crafter + Yahenni, Undying Partisan

Kiki-Jiki, Mirror Breaker

Lightning Crafter

Yahenni, Undying Partisan

How it works

1. Cast Lightning Crafter by paying 3.
2. When Lightning Crafter enters the battlefield, its champion ability triggers.
3. Holding priority, activate Kiki-Jiki by tapping it, creating a token copy of Lightning Crafter with haste.
4. When the token Lightning Crafter enters the battlefield, its champion ability triggers, exiling Kiki-Jiki.
5. Activate the token Lightning Crafter by tapping it, dealing 3 damage to any target.
6. Activate Yahenni by sacrificing the token Lightning Crafter.
7. When the token Lightning Crafter leaves the battlefield, it triggers, returning Kiki-Jiki from exile to the battlefield.
8. Resolve the Yahenni ability.
9. Repeat from step 3.