This spell when cast enables the caster to conjure an insubstantial magical force directly around a target's neck. This force then attempts to strangle the victim forcibly. The choking force inflicts 1d4 points of physical damage for every 2 levels of the caster each round the target is affected. The spell lasts its duration whether the caster concentrates on it or not.

   If a successful fortitude save is made the victim can still croak out a few words and it is possible to even cast spells, although a concentration check must be made for any verbal spells in addition to the normal concentration check needed for the continuing damage taken by this spell. A failed save indicates that the target can't perform any verbal action or concentrate on casting a spell. They also suffer a -2 to all actions and skill checks due to the inability to focus.

   The caster must concentrate to continue the damage inflicted by the spell on an opponent (a standard or move action). The target of the spell may be changed at will by the caster as often as desired but only once per round, until the duration of the spell ends.

   The force created by the spell ignores armor and physical barriers since it is created precisely at the spot needed to "choke" and vanishes out of existence when not being used. This also means that the spell ignores all barriers in-between the caster and the target, but the caster must be able to see their target.