Detect Scrying

1 Standard|V,S,M|40 rad on You|24hrs|None|No
You immediately become aware of any attempt to
observe you by means of divination (scrying) spell
or effect. You know the location of every magical
sensor within the spells area. Make opposed caster
level checks. If you at least match, you get a visual
image of the scrier and an accurate sense of
direction and distance from you.