Orvar, the All-Form + Palinchron + Clockspinning

Orvar, the All-Form

Palinchron

Clockspinning

How it works

1. Activate up to seven lands you control by tapping them, adding at least 4.
2. Cast Clockspinning with buyback by paying 3, targeting Palinchron.
3. Orvar's first ability triggers, creating a token copy of Palinchron.
4. The Palinchron token enters the battlefield, untapping up to seven lands.
5. Resolve Clockspinning, returning it to your hand.
6. Repeat.
7. Once you have infinite mana, you can target any permanents you control in step 2 to create infinite token copies of them.