Wormfang Manta + Erratic Portal + Torpor Orb

Wormfang Manta

Erratic Portal

Torpor Orb

How it works

1. Activate Erratic Portal by paying 1 and tapping it, returning Wormfang Manta from the battlefield to your hand.
2. Wormfang Manta leaves the battlefield, triggering its first ability, causing you to take an extra turn after this one.
3. Cast Wormfang Manta by paying 5.
4. Wormfang Manta enters the battlefield, but its first ability does not trigger due to Torpor Orb.
5. Repeat each turn.