Detect Weapons

For the duration, you sense the presence of manufactured weapons within 30ft of you. If you sense weapons in this way, you can use your action to determine their location and type (e.g. "Shortsword"). This can detect an improvised weapon if it is wielded by a creature intended to use it as such.

This spell penetrates most barriers, but is blocked by 1 foot of stone, 1 inch of common metal, a thin sheet of lead, or 3 feet of wood or dirt.