Detect Traps

For the duration, you sense the presence of traps within 30 feet of you. If you sense traps in this way, you can use your action to see a faint aura around any visible creature or object that is trapped, and discern the general nature of the trap. A trap, for the purpose of this spell, includes anything that would inflict a sudden or unexpected effect you consider harmful or undesirable, which was specifically intended as such by its creator. Thus, the spell would sense an area affected by the Alarm spell, a Glyph of Warding, or a mechanical pit trap, but it would not reveal a natural weakness in the floor, an unstable ceiling, or a hidden sinkhole.

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