Kaya the Inexorable + Wormfang Manta + Torpor Orb + Umbral Collar Zealot

Kaya the Inexorable

Wormfang Manta

Torpor Orb

Umbral Collar Zealot

How it works

1. Activate Kaya the Inexorable's first ability by putting a loyalty counter on it, putting a ghostform counter on Wormfang Manta.
2. Activate Umbral Collar Zealot by sacrificing Wormfang Manta.
3. When Wormfang Manta dies, its second ability and its ghostform ability trigger.
4. Resolve the ghostform trigger, returning Wormfang Manta from your graveyard to your hand and creating a 1/1 Spirit creature token.
5. Resolve the second trigger, causing you to take an extra turn after this one.
6. Resolve the Umbral Collar Zealot ability
7. Cast Wormfang Manta by paying 5.
8. Wormfang Manta's first ability does not trigger due to Torpor Orb.
9. Repeat each turn.

This clever loop locks down endless extra turns by weaponizing Wormfang Manta's built-in drawback. Normally, playing the Manta forces you to skip a turn when it enters and rewards you with an extra turn when it leaves; however, Torpor Orb steps in to silence that painful "enters the battlefield" trigger completely, letting the Manta sneak onto the battlefield without penalty. From there, Kaya the Inexorable primes the Manta with a ghostform counter so that sacrificing it to Umbral Collar Zealot triggers its return to your hand while safely banking an extra turn. Replaying the Manta restarts the cycle anew, effortlessly generating infinite turns and an unbreakable lock on the game.