Synaptic Shock (3.5e Maneuver)

You fry your opponent's nervous system, causing them to fall to the ground, convulsing.

As part of this strike, make a normal attack. If it hits, the target's nervous system is overloaded; they are automatically considered entangled for the duration of this maneuver. During this time period, any time the target attempts to take a swift or immediate action, or attempts to move 20 feet or more, they must make a fortitude save (DC 17+your INT mod), or they fall prone immediately and are dazed for one round, wracked with convulsions. A creature affected by this ability has a 50% chance to miscast any spell, power, or spell-like ability it tries to activate, in which case, they must make a save against convulsions as above.

This is a negative energy effect. It only works on living creatures with a nervous system or an equivalent of some sort. This maneuver is a supernatural effect.

Special: If you know at least two Mystical Rain maneuvers, this maneuver gains the [X-Discipline] tag and can be used with ranged weapons.