Crush of the depths momentarily increases the air or water pressure within its area of effect. Everything within the area experiences a pressure of 1,000 pounds per square inch (equivalent to that found at more than 2,000 feet beneath sea). All creatures in the area of effect are allowed a saving throw vs. spell. Creatures that fail the saving throw can't perform any action more complex than normal movement or speech for 1d4 rounds. During this time, affected creatures suffer a -4 penalty to all saving throws, and attack rolls made against them have a +4 bonus. Creatures unable to dive to a depth of 2,000 feet also suffer 2d4 points of damage if the saving throw is failed. This spell has no appreciable effects when cast at depths greater than 1, 500 feet.
Notes: Common for sahuagin.