Gonti's Aether Heart | Vesuvan Duplimancy | Clockspinning

Cards

({6} magic symbol) ({U} magic symbol) ({U} magic symbol) (at most) each turn available.

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