4SRD:doppelganger

4SRD > Doppelganger

DOPPELGANGER

Doppelgangers are shapechangers, a people able to assume the features of other humanoids. Doppelgangers' talents breed mistrust and fear, leading many changelings to hide their true nature from even their closest companions. Many Doppelgangers seek only to avoid unwanted attention and to find a place in the world.

+2 Charisma; +2 Dexterity or Intelligence.
Medium-sized. Doppelganger base land speed is 30 feet.
Normal Vision.
Languages: Common.
Skill Bonuses: +2 Bluff,+2 Insight
Shapechanger:: You are a shapechanger; you can alter your appearance. As such, you are subject to effects and conditions that affect shapechangers.
Mental Defense: You have a +1 racial bonus to Will.
Spell-Like Abilities: 1. You have the doppelganger disguise Doppelganger racial ability.
You alter your form to look like another person.
(Swift Action, Personal)
Whenever you want, you can alter your physical form to take on the appearance of any Medium humanoid. You retain your statistics in your new form, and your clothing, armor, and possessions do not change. The new form lasts until you change form again. Any creature that attempts to see through your ruse makes an Insight check opposed by your Bluff check, and you gain a +5 bonus to your check.

2. You have the doppelganger trick Doppelganger racial ability.
Your feint tricks a foe into giving you an advantage.
(Swift Action, Melee range within 5 feet)
Once per encounter, you can make a Bluff check opposed by one target's passive Insight. If your check succeeds, you gain combat advantage against the target until the end of your next turn.