This is a spell used by the Warder's of Ur. With a single word the Warder may freeze someone in their tracks, paralyzing their muscles. The target cannot escape the Power, indeed will not even want too, unless they make a roll of Spirit resisted by the Presence + Level, until the Mage who cast the spell allows them to do so. The spell can target anyone that can clearly hear the Mage's firmly pronounced word. For normal speech this is up to 8 Legats, while a shout may carry as much as 20 Legats.
power+1 Presence per Power Level