Reactive Flash
Activate ◆ (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 Readied action or the 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.
Traits
An item with this trait can be used only once. Unless stated otherwise, it's destroyed after activation. Consumable items include alchemical items and magical consumables such as scrolls and talismans. When a character creates consumable items, they can make them in batches of four.
Something with the magical trait is imbued with magical energies not tied to a specific tradition of magic. Some items or effects are closely tied to a particular tradition of magic. In these cases, the item has the arcane, divine, occult, or primal trait instead of the magical trait. Any of these traits indicate that the item is magical.
A whetstone is a magically enhanced consumable item designed to increase a weapon's effectiveness