Wizard Mentor + Wormfang Manta + Hushwing Gryff

Wizard Mentor

Wormfang Manta

Hushwing Gryff

How it works

1. During your precombat main phase, cast Wormfang Manta by paying 5.
2. Wormfang Manta's first ability does not trigger due to Hushwing Gryff.
3. Activate Wizard Mentor by tapping it, returning it and Wormfang Manta from the battlefield to your hand.
4. When Wormfang Manta leaves the battlefield, its second ability triggers, causing you to take an extra turn after this one.
5. Cast Wizard Mentor by paying 2.
6. Repeat each turn.