Type: Monstrous
Source: Savage Species
You use substitute verbal and somatic components when casting spells.
Prerequisite: Wis 13, non-humanoid or non-humanlike form.
Benefit: You complete the verbal and somatic components of spells by substituting vocalizations and gestures appropriate to your shape. You must still have suitable appendages and vocal organs. For example, a giant eagle could substitute screeches and waves of its talons for the normal verbal and somatic components of a spell. You can use any material component or focus that you can hold. This feat does not permit the use of magic items by a creature whose form could not ordinarily use them, and you do not gain the ability to speak if you cannot already.