Cheapest priced copy (Commander Legends: Battle for Baldur's Gate): $0.39 at Card Kingdom, near mint, their price list as of .
Armor of Shadows 
Instant · Common · Commander Legends: Battle for Baldur's Gate · #112
Until end of turn, target creature gets +1/+0 and gains indestructible. (Damage and effects that say "destroy" don't destroy it.)
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
1 printing · $0.39 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Legends: Battle for Baldur's Gate | 112 | Common | $0.39 | $0.49 |