srd
SRD
Scabbard of Keen Edges: 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.
Faint transmutation; CL 5th; Craft Wondrous Item, keen edge; Price 16,000 gp;Weight 1 lb.
Open Game Content from the System Reference Document 3.5, used under the Open Game License 1.0a.