Cheapest priced copy (Ravnica: Clue Edition): $0.35 at Card Kingdom, near mint, their price list as of .
Knife 
Artifact — Clue Equipment · Uncommon · Murders at Karlov Manor · #134
During your turn, equipped creature gets +1/+0 and has first strike.
{2}, Sacrifice this Equipment: Draw a card.
Equip {2}
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ravnica: Clue Edition | 10 | Uncommon | $0.35 | — |
| Murders at Karlov Manor | 134 | Uncommon | $0.35 | $0.49 |