Reactive Flash

Activate [1] (manipulate)

These whetstones are miniature stone replicas of weapons, such as a sword or an axe, though their function is the same regardless of their shape. When you attempt a Strike as a reaction (such as with a Reactive Strike reaction) using a weapon under the effect of a reactive flash, the target must first succeed at a DC 19 Reflex save or be Off Guard against the attack.