Immobilizing Strike

Immobilizing Strike
You can restrict your target’s mobility with a few well-placed strikes.
Prerequsites: Character Level 6+, at least 2 dice of sneak attack from any source
Benefit: When you hit with an attack that allows you to deal sneak attack damage, you may reduce your usual number of sneak attack dice by 2 to reduce the target’s speed by 1 square. This effect may be applied up to twice to any single attack (if you have at least 4 sneak attack dice left after devoting dice to other class and feat abilities). The target recovers from this speed penalty at the rate of 1 square per day. Effects that speed up the recovery of temporary ability damage also speed up recovery of this damage. Multiple attacks with this ability may reduce an character’s speed to 0 squares. Targets reduced to a speed of 0 squares may move 1 square as a full-round action.
Normal:
Special: