Scabbard of keen edges
(Dungeon Master's Guide v.3.5, page 266)
Price (Item Level): 16,000 gp (14th)
Body Slot: —
Caster Level: 5th
Aura: Faint; (DC 17) transmutation
Activation: Standard (command)
Weight: 1 lb.
This scabbard is fashioned from cured leather and fine silver.
It can shrink or enlarge to accommodate any knife, dagger, sword, or similar weapon up to and including a greatsword. Up to three times per day on command, the scabbard casts keen edge on any blade placed within it.
Prerequisites: Craft Wondrous Item, keen edge.
Cost to Create: 8,000 gp, 640 XP, 16 days.