The Nothing of Azzgarat

This spell summons forth the 45th layer of the Abyss, creating an area with a 20 ft radius.  Until the spell ends, the area is transformed into something that resembles the abyssal nothing of Azzgarat.  It becomes a windswept steppe of grey skies, blank earth, and becomes devoid of all terrain.  All sounds are muted, even the loudest of screams.  The background becomes remarkably unremarkable, and everything blends together making it nearly impossible to discern where you are, or where you should be going.  

The area is considered difficult terrain, and heavily obscured.  All creatures are considered deafened as they enter the area.  Spells with the verbal component are impossible in here.