You gain more versatility when changing your form.

Prerequisite: Ability to manifest minor metamorphosis, metamorphosis, major metamorphosis, or true metamorphosis.

Benefit: Any time you manifest minor metamorphosis, metamorphosis, major metamorphosis, or true metamorphosis, you gain one additional menu option from either the Ability Menu or Enhancement Menu of the relevant power.

Source: Psionics Expanded: Mind Over Body. Copyright 2011, Dreamscarred Press.