Cheapest priced copy (Reality Fracture Commander): $9.49 at Card Kingdom, near mint, their price list as of .
Flawless Maneuver 
Instant · Rare · Avatar: The Last Airbender Eternal · #306
If you control a commander, you may cast this spell without paying its mana cost.
Creatures you control gain indestructible until end of turn.
Legal inCommanderLegacyVintage
Banned inBrawl
Not legal inStandardPioneerModernPauper
8 printings · $9.49 to $59.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2020 | 26 | Rare | $20.99 | — |
| Commander Masters | 24 | Rare | $20.99 | $39.99 |
| Commander Masters | 459 | Rare | — | — |
| Commander Masters | 692 | Rare | $37.99 | $59.99 |
| Reality Fracture Commander | 25 | Rare | $9.49 | — |
| Phyrexia: All Will Be One Commander | 68 | Rare | $20.99 | — |
| Secret Lair Drop | 1728 | Rare | $29.99 | $39.99 |
| Avatar: The Last Airbender Eternal | 306 | Rare | $23.99 | — |
2 rulings from Wizards of the Coast
- 17 April 2020It doesn't matter whose commander you control. Any one will do. If you have two commanders, you just need to control one of them.
- 17 April 2020Once you begin casting this spell, players can't take any other actions until you're done casting it. Notably, they can't try to remove the commander you control to make you pay its cost.