Foe-Sensing Rod
Activate ◆ (manipulate)
Imbued with a spirit fragment that continually surveys the world around it, this crystalline bar is roughened to form a file at one end. When you apply the foe-sensing rod to a weapon, choose aberration, animal, beast, celestial, construct, dragon, elemental, fey, fiend, giant, monitor, ooze, undead, or both fungus and plant. The spirit fragment is transferred into your weapon for 1 hour, keeping watch for creatures with the chosen trait or traits. The affected weapon vibrates slightly if such a creature is within 60 feet of you, unless the creature is disguised or Hidden and has a Deception or Stealth DC of 26 or higher.
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