Change Shape (Su)
A fey creature can change shape into a single form. Possible forms include a normal specimen of its base creature, a humanoid creature within one size category, or an animal within one size category. In all cases, the fey creature appears as the same individual of its alternate form each time it changes shape. The type of polymorph spell used should be chosen as appropriate based on the alternate form, such as alter self for taking humanoid form. This ability can be selected more than once, granting an additional form each time.