Cheapest priced copy (The List): $0.35 at Card Kingdom, near mint, their price list as of .
Shard of Broken Glass 
Artifact — Equipment · Common · Shadows over Innistrad · #262
Equipped creature gets +1/+0.
Whenever equipped creature attacks, you may mill two cards.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The List | SOI-262 | Common | $0.35 | — |
| Shadows over Innistrad | 262 | Common | $0.35 | $0.49 |