Bite of the Weretiger

You snarl, and your features shift into those of a tiger. Your hands grow sharp claws, and the thick skin and striped fur of a tiger covers your body.

(Spell Compendium, p. 28)
Originally posted on D&D tools

Transmutation
Level: Druid 5, Sorcerer, Wizard 6,
Components: V, S, M,
Casting Time: 1 Standard Action
Range: Touch
Target: You
Saving Throw: No
Spell Resistance: No

You gain a +12 enhancement bonus to Strength, a +4 enhancement bonus to Dexterity, a +6 enhancement bonus to Constitution, and a +5 enhancement bonus to natural armor. Your hands become claws, granting you two claw attacks, and your mouth becomes that of a tiger, giving you a bite attack. You can attack with both claws at your full base attack bonus, but your bite attack takes a -2 penalty (as if you had the Multiattack feat). Each claw deals 1d8 points of damage (1d6 if you are Small) + your Strength modifier, and your bite deals 2d6 points of damage (2d6 if you are Small) + 1/2 your Strength modifier. You gain the benefits of the Blind-Fight and Power Attack feats, as well. If your base attack bonus is +6 or higher, you do not gain any additional attacks.

Material Component: A tiger’s claw.