For the duration, you are surrounded by a field of magical energy, the expands from you outward that lets you know if there is an aberration, fey, fiend, or undead within 30 feet of you, as well as where the creature is located (Creatures must pass an [Tooltip Not Found] check when they enter the field or be detected). Similarly, you know if there is a place or object within 30 feet of you that has been magically desecrated.

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.