Casting Time 1 standard action
With a single touch, you reduce a creature to a fumbling clown.
In addition, if the subject moves more than half its speed, it falls prone. If the subject flies, its maneuverability is reduced by one step (perfect maneuverability becomes good, good becomes average, and so on).
Advanced Player’s Guide. Copyright 2010, Paizo Publishing, LLC; Author: Jason Bulmahn.