Needs review
Source: Dragon Magazine #342

Description: You recall and mimic the subtle ki frequencies of others, obscuring your true spirit and clouding the minds of those who view you.

Prerequisites: Ghost Step Ability

You can spend one daily use of your ki power to change your form for 1 minute, as the spell alter self except the new form must be of your same size and type. You gain none of the movement or combat benefits of the new form. Any wings, fins, or other body parts that grant an actual creature of the chosen kind an alternative form of movement are merely decorative and nonfunctional on you. You can spend two daily uses of your ki power to assume the form of a specific creature of your type for 1 minute. Anyone who knows the specific creature you are emulating gains a bonus on her Spot check to see through your disguise.