Cheapest priced copy (Commander Legends): $0.35 at Card Kingdom, near mint, their price list as of .
Reyav, Master Smith 
Legendary Creature — Dwarf Artificer · 2/2 · Uncommon · Commander Legends · #290
Whenever a creature you control that's enchanted or equipped attacks, that creature gains double strike until end of turn.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
7 printings · $0.35 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Legends | 290 | Uncommon | $0.35 | $0.49 |
| Commander Legends | 610 | Uncommon | — | — |
| Multiverse Legends | 57 | Uncommon | $0.35 | $0.49 |
| Multiverse Legends | 122 | Uncommon | — | — |
| Multiverse Legends | 187 | Uncommon | — | $2.49 |
| Multiverse Legends | 187z | Uncommon | — | — |
| The List | CMR-290 | Uncommon | $0.35 | — |
2 rulings from Wizards of the Coast
- 10 November 2020If a creature you control that's enchanted and equipped attacks, Reyav's ability will trigger only once for that creature. (Don't worry. Multiple instances of double strike are redundant. You're not missing much.)
- 10 November 2020The creature needs to be enchanted or equipped at the moment it's declared as an attacker to cause Reyav's ability to trigger. If the creature is no longer enchanted or equipped (or no longer attacking) as the ability tries to resolve, the ability still resolves.