Wormfang Manta + Hushwing Gryff + Ilharg, the Raze-Boar

Wormfang Manta

Hushwing Gryff

Ilharg, the Raze-Boar

How it works

1. Attack with Ilharg.
2. Ilharg's attack trigger triggers, putting Wormfang Manta onto the battlefield tapped and attacking.
3. At the beginning of your end step, Wormfang Manta is returned to your hand.
4. This triggers its LTB, granting you an extra turn after this one.
5. Repeat for infinite turns.

This loop relies on cleverly bypassing Wormfang Manta's built-in drawback while capitalizing entirely on its rewarding leave-the-battlefield trigger. Normally, when Wormfang Manta enters the battlefield, its enter-the-battlefield ability would make you skip your next turn; however, Hushwing Gryff's static ability suppresses this entering penalty entirely, meaning you never skip a thing. With the coast clear, you use Ilharg, the Raze-Boar to sneak Wormfang Manta straight from your hand into the fray as an attacking threat. Because Ilharg, the Raze-Boar forces Wormfang Manta back to your hand at the beginning of the end step, the Manta cleanly leaves the battlefield and safely triggers its second clause—awarding you an extra turn—which you can then repeat to take infinite turns.