There and Back Again + Orvar, the All-Form + Seething Anger

There and Back Again

Orvar, the All-Form

Seething Anger

How it works

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 Seething Anger with buyback by paying 3, 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 Seething Anger from step 2, giving the Smaug token +3/+0 until end of turn and returning Seething Anger to your hand.
7. Activate four Treasures by tapping and sacrificing them, adding 3.
8. Repeat from step 2.
9. Once you have infinite colored mana, you may instead target any other creature(s) you control using Seething Anger, to create infinite tokens of them using Orvar.