Gonti's Aether Heart + Vesuvan Duplimancy + Clockspinning

Gonti's Aether Heart

Vesuvan Duplimancy

Clockspinning

How it works

1. Cast Clockspinning with buyback by paying 3, targeting Gonti's Aether Heart.
2. Vesuvan Duplimancy triggers, creating a token copy of Gonti's Aether Heart that isn't legendary.
3. When the token Gonti's Aether Heart enters the battlefield, each Gonti's Aether Heart you control triggers, causing you to get EE for each Gonti's Aether Heart you control.
4. Resolve Clockspinning, returning it to your hand.
5. If you have less than eight E, repeat from step 1 one additional time.
6. Activate a Gonti's Aether Heart token by paying eight E and exiling it, causing you to take an extra turn after this one.
7. Repeat each turn.