There and Back Again, Orvar, the All-Form, and Elvish Fury

Prerequisites

• There and Back Again on the battlefield
• Orvar, the All-Form on the battlefield
• Elvish Fury in hand
• There and Back Again has exactly two lore counters on it
• available

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 Elvish Fury 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 Elvish Fury from step 2, giving the Smaug token +2/+2 until end of turn and returning Elvish Fury to your hand
7. Activate five 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 creature(s) you control using Elvish Fury, to create infinite tokens of them using Orvar

Results

• Infinite colored mana
• Infinite copies of creatures you control
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinitely large creatures until end of turn
• Infinite magecraft triggers
• Infinite storm count
• Infinite Treasure tokens