Kaya the Inexorable + Wormfang Manta + Hushwing Gryff + Bloodflow Connoisseur

Kaya the Inexorable

Wormfang Manta

Hushwing Gryff

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 Hushwing Gryff.
9. Repeat each turn.

This mesmerizing loop hinges on turning Wormfang Manta's built-in drawback into a massive advantage by exploiting how its triggers interact. While Hushwing Gryff quietly mutes the Manta's enter-the-battlefield trigger so you never skip your own turns, sacrificing the beast to Bloodflow Connoisseur forces its leave-the-battlefield ability to grant you an extra turn. Meanwhile, Kaya the Inexorable keeps the cycle alive by using her +1 to slap a ghostform counter on the Manta, ensuring it effortlessly returns to your hand upon dying so you can recast it turn after turn.