Warning: This is 3.0 Edition material. It is possible that there is more recent 3.5 Edition version.
Inaccurate?

Jagged Tooth

(Savage Species)

Transmutation
Level: Druid 3, Ranger 3,
Components:
Target: One natural slashing or piercing weapon of target creature
Saving Throw: Will negates (harmless)
Spell Resistance: Yes (harmless)

As keen edge, except as noted above.

Also appears in

  1. Spell Compendium