Cloak of Shadows
Your ability to conceal yourself is not fully developed, so you need some sort of cover in order to hide yourself effectively (or at least you must be in a position that eyes easily pass over anyway). Most often, such cover is the shadows of an alley or a recessed door frame, but this power also works if you can interpose a tree or lamppost (no matter how narrow) between yourself and the ones from whom you hide. Once under cover, you must remain completely motionless in order to remain obscured. If you move, if a light is turned on which would illuminate you, or if a viewer moves to an angle at which you are directly in his line of sight, the Cloak of Shadows fails.
No roll needs to be made, since the Obfuscate succeeds once the criteria have been met. However, those with Auspex higher than the character's Obfuscate will see right through the shadows.