Category
Shroud of Night.
The vampire may evoke an area of inky black matter. The darkenss obscures light and even sound. Even characters with Auspex or Protean 1 receive a penalty of three dice. The darkness is usually static, but with all the vampire's concentration, it may be moved at walking speed.
System
For every success on a Manipulation+Occult roll (diff 7) a 10' square area may be covered in the shadowy stuff. The range of this power is 50 yards. The Shroud may be summoned in an area the vampire cannot see, but the difficulty for such is 9, and a Blood Point will be required.