Magic Fang(Player's Handbook v.3.5, p. 250)
Level: Druid 1, Ranger 1, Death Master 1, Urban Druid 1, Dragon 1, Scalykind 1,
Components: V, S, DF,
Casting Time: 1 standard action
Target: Living creature touched
Duration: 1 min./level
Saving Throw: Will negates (harmless)
Spell Resistance: Yes (harmless)
Magic fang gives one natural weapon of the subject a +1 enhancement bonus on attack and damage rolls.
The spell can affect a slam attack, fist, bite, or other natural weapon.
(The spell does not change an unarmed strike's damage from nonlethal damage to lethal damage).
Magic fang can be made permanent with a permanency spell.