Kaya the Inexorable + Wormfang Manta + Torpor Orb + Ashnod's Altar

Kaya the Inexorable

Wormfang Manta

Torpor Orb

Ashnod's Altar

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 Ashnod's Altar by sacrificing Wormfang Manta, adding CC.
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. Cast Wormfang Manta by paying 5.
7. Wormfang Manta's first ability does not trigger due to Torpor Orb.
8. Repeat each turn.

This cunning loop leverages Wormfang Manta's notoriously dangerous drawback by turning its leave-the-battlefield trigger into an endless stream of extra turns. Because Torpor Orb suppresses the Manta's enters-the-battlefield ability, you completely bypass the penalty of skipping your next turn while still reaping the reward of extra turns whenever it departs. Ashnod's Altar provides a convenient way to feed the creature into the graveyard, which then triggers the ghostform counter granted by Kaya the Inexorable's +1 ability to bounce the Manta straight back to your hand for recasting.