4SRD:darkling shroud

4SRD > Darkling Shroud

Darkling Shroud: You have the darkling shroud Dark Elf racial ability.
A thicket of blackness descends around you, hiding you from sight.
(Swift Action, radius 5 feet from yourself)
Once per encounter, you can create a cloud of darkness that remains in place until the end of your next turn. The cloud blocks line of sight, squares within it are totally obscured, and creatures entirely within it are blinded until they exit. You are immune to these effects.