Requires

There and Back Again must be on the battlefield. Orvar, the All-Form must be on the battlefield. Clockspinning must be in hand. There and Back Again has exactly two lore counters on it. Mana needed:

Steps

1. At the beginning of your precombat main phase, There and Back Again triggers, creating a legendary 6/6 Smaug creature token, and causing you to sacrifice There and Back Again.
2. Cast Clockspinning with buyback by paying , targeting the Smaug token.
3. Orvar's first ability triggers, creating a copy of the Smaug token.
4. Put the new Smaug token into your graveyard due to the legend rule.
5. When Smaug dies, it triggers, creating fourteen Treasure tokens.
6. Resolve Clockspinning from step 2, returning it to your hand.
7. Activate four Treasures by tapping and sacrificing them, adding .
8. Repeat from step 2.
9. Once you have infinite colored mana, you may instead target any other permanent(s) you control using Clockspinning, to create infinite tokens of them using Orvar.

Results