Crippling Strike (Aspect)

Your heightened awareness lets you react faster than others, but also allows you to aim your strikes precisely enough to cripple your foes.

When you deal Sneak Attack damage to a creature, you can reduce the damage by 1d6 to reduce that creature’s walking speed by 10 feet for 1 minute, or until they receive healing. This effect stacks but cannot reduce a creature’s walking speed to less than 5 feet.