Cheapest priced copy (Commander Masters): $89.99 at Card Kingdom, near mint, their price list as of .
Deflecting Swat 
Instant · Rare · Avatar: The Last Airbender Eternal · #311
If you control a commander, you may cast this spell without paying its mana cost.
You may choose new targets for target spell or ability.
Legal inCommanderLegacyVintage
Banned inBrawl
Not legal inStandardPioneerModernPauper
6 printings · $89.99 to $249.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2020 | 50 | Rare | $94.99 | — |
| Commander Masters | 214 | Rare | $89.99 | $139.99 |
| Commander Masters | 532 | Rare | — | — |
| Commander Masters | 698 | Rare | $109.99 | $249.99 |
| Secret Lair Drop | 1552 | Rare | $109.99 | $119.99 |
| Avatar: The Last Airbender Eternal | 311 | Rare | $99.99 | — |
5 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.
- 17 April 2020If you choose new targets for the target spell, the new targets must be legal.
- 17 April 2020If the target spell has damage divided as it was cast (like Mythos of Vadrok), the division can't be changed although the targets receiving that damage still can. The same is true of spells that distribute counters.
- 17 April 2020If the target spell has a variable number of targets, you can't change how many targets it has.