Kaya the Inexorable + Wormfang Manta + Tocatli Honor Guard + Bloodflow Connoisseur

Kaya the Inexorable

Wormfang Manta

Tocatli Honor Guard

Bloodflow Connoisseur

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 Bloodflow Connoisseur 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 Bloodflow Connoisseur ability, putting a +1/+1 counter on it.
7. Cast Wormfang Manta by paying 5.
8. Wormfang Manta's first ability does not trigger due to Tocatli Honor Guard.
9. Repeat each turn.

This clever loop turns Wormfang Manta's built-in drawback into an engine for infinite turns, sidestepping its "enters" trigger entirely thanks to Tocatli Honor Guard keeping those pesky abilities from firing. Kaya the Inexorable provides the necessary recursion by placing a ghostform counter on the Manta, allowing Bloodflow Connoisseur to gracefully sacrifice it and send it straight back to your hand for another casting.