Venom's Gift

(Complete Champion, page 63, DnD 3.5)

[Wild]

You can imbue your natural attacks with a touch of venom.

Prerequisite

Any two wild feats, wild shape class feature, ability to assume plant form using wild shape

Benefit

As a standard action, you can expend one daily use of your wild shape ability to envenom your natural attacks for up to 1 round per caster level you possess. An ordinary unarmed strike does not qualify for this benefit; you must have a true natural attack, though it can be the result of a transmutation spell or other shapechange effect. Poison: Injury, Fortitude negates (DC 10 +1/2 your HD + your Con modifier), ld2 Str/ld2 Str.