This spell can be cast on an enemy cavalry unit, swarm, chariot or a single ridden or unridden monster anywhere on the battlefield, even if the target is engaged in combat.

If successfully cast, any creatures in the unit (but not their riders) will cower and therefore may not attack in that turn's close combat phase. In addition, they will stubbornly refuse to move until the end of their next movement phase other than to flee, in which case they will be more than happy to oblige.