Vrock's Screech

Developed by an unknown wizard, this Abyssal spell mimics the power of the true tanar'ri for which it is named. It enables the caster to screech loudly, deafening all creatures within 30 feet for 2d6 hours and stunning them for one round in which no actions can be taken. When stunned, a creature can make no attacks, use no spells or magical abilities, and moves at half speed. The stunned creature's opponents receive a +4 bonus to attack rolls.

Creatures of less than 6th level or 6 HD are automatically affected; more powerful creatures may make a saving throw versus spell to negate both effects.

The material component for this spell is a single vrock feather.