You manipulate shadows and darkness.
Granted Powers: You gain Umbral Channel as a bonus feat, even if you do not meet the prerequisites.
In addition, you add Bluff (Cha), Knowledge (dungeoneering) (Int), and Stealth (Dex) to your list of skills.
Sphere Powers: You can select your sphere powers from the powers and revelations granted by the following sources.
Domain/Subdomain: Darkness/Loss, Moon, Night
Mystery: Dark Tapestry (pierce the veil revelation only), Shadow