Solidify

Eldritrch Force; Instant / 5 Seconds
This spell forces a gaseous form to become immediately solid. The creature may be able to turn gaseous again if it has the skill.

This spell will not work on certain creatures who are gaseous normally, such as noncorporeal undead or air elementals.

A corporeal target struck by this effect, such as a PC or most monsters, will suffer a temporary slowdown. For five seconds, the target may not run and may not make any offensive weapon calls or throw packets, but may block, use defensive calls, and touch-cast spells.
“With Eldritch Force I Solidify you.”