Cheapest priced copy (The List): $0.79 at Card Kingdom, near mint, their price list as of .
Surge of Salvation 
Instant · Uncommon · March of the Machine · #41
You and permanents you control gain hexproof until end of turn. Prevent all damage that black and/or red sources would deal to creatures you control this turn.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.79 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| March of the Machine | 41 | Uncommon | $0.99 | $1.99 |
| The List | MOM-41 | Uncommon | $0.79 | — |
One ruling from Wizards of the Coast
- 14 April 2023The set of permanents that gain hexproof is determined as Surge of Salvation resolves. Permanents you begin to control later in the turn won't gain hexproof. However, the damage prevention effect will apply to all creatures you control throughout the turn, even if you didn't control them (or they weren't creatures) as Surge of Salvation resolved.