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From Pathfinder Dark Archive (Remastered), which isn't enabled.

Alter Ego Dedication

FEAT 2
UNCOMMONARCHETYPEDEDICATION
Archetype Alter Ego
Prerequisites trained in Deception and Stealth

You make yourself into a living mirror, becoming a double of someone unremarkable, and you slip into exactly the role that can get you past security or into a sensitive facility. You become an expert in Deception. You gain the Assume a Role activity.

Alter Ego

Pathfinder Dark Archive (Remastered)ORC