Kaya the Inexorable + Wormfang Manta + Tocatli Honor Guard + Woe Strider

Kaya the Inexorable

Wormfang Manta

Tocatli Honor Guard

Woe Strider

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 Woe Strider 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 Woe Strider ability, causing you to scry 1.
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 loop completely bypasses Wormfang Manta's built-in drawback—skipping your turn when it enters—thanks to Tocatli Honor Guard suppressing those entering-the-battlefield triggers entirely. With the downside neutralized, Kaya the Inexorable's ghostform counter continuously rescues the Manta whenever Woe Strider sacrifices it to the graveyard, setting off a chain reaction that loops the Manta's leave-the-battlefield trigger to chain extra turns indefinitely.