Cheapest priced copy (Commander Legends: Battle for Baldur's Gate): $0.59 at Card Kingdom, near mint, their price list as of .
Greatsword of Tyr 
Artifact — Equipment · Common · Commander Legends: Battle for Baldur's Gate · #22
Whenever equipped creature attacks, put a +1/+1 counter on it and tap up to one target creature defending player controls.
Equip {W} ({W}: Attach to target creature you control. Equip only as a sorcery.)
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
1 printing · $0.59 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Legends: Battle for Baldur's Gate | 22 | Common | $0.59 | $1.49 |