Darkness of Domination

You speak a single word of dark power and an irregular wave of black energy emenates from you to a radius of 30 feet.  The area is fully dark, but the caster can designate any creatures within the radius to be granted Devil's Sight to 60 feet for the duration of the spell.  Any creature that begins it's turn inside the emantation is subject to a command by the caster.  This is effectively a command spell.  The caster may desginate which command is given as each target is affected by the Darkness of Domination.

Anyone who tries to create light within the emanation takes 5d6 points of cold damage and the light (unless created by a 9th level spell or a magic item) is immediately extinguished.