Requires

Roxanne, Starfall Savant must be in hand, or in the command zone. Amulet of Vigor must be on the battlefield. Panharmonicon must be on the battlefield. Temur Sabertooth must be on the battlefield. Mana needed: plus enough mana to pay for commander tax, if applicable

Steps

1. Cast Roxanne either from your hand or from the command zone by paying plus commander tax, if applicable.
2. When Roxanne enters the battlefield, its first ability triggers twice.
3. Resolve the first trigger, creating a Meteorite artifact token.
4. When the Meteorite enters the battlefield, it and Amulet of Vigor trigger twice.
5. Resolve both Meteorite triggers, dealing 4 damage to any target.
6. Resolve the first Amulet of Vigor trigger, untapping the Meteorite.
7. Activate the Meteorite by tapping it, adding .
8. Roxanne's second ability triggers, adding .
9. Repeat from step 6 for the remaining Amulet of Vigor trigger.
10. Repeat from step 3 for the remaining Roxanne trigger.
11. Activate Temur Sabertooth by paying , returning Roxanne from the battlefield to your hand.
12. Repeat.
13. Once you have infinite mana, you may forego tapping the Meteorites for mana and/or add mana of any color(s).

Results