Cheapest priced copy (Aetherdrift): $0.35 at Card Kingdom, near mint, their price list as of .
Alacrian Armory 
Artifact · Uncommon · Aetherdrift · #2
Creatures you control get +0/+1 and have vigilance.
At the beginning of combat on your turn, choose up to one target Mount or Vehicle you control. Until end of turn, that permanent becomes saddled if it's a Mount and becomes an artifact creature if it's a Vehicle.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Aetherdrift | 2 | Uncommon | $0.35 | $0.49 |