Alarm (Clairsentience)

Properties

Skills: Clairsentience
Actions: where M* = M*(this), alarm(scene) effect = M*(radius) alarm.

While you sleep, there is a bubble around you with radius up to your modifier in metres. When any creature with hostile intentions crosses that barrier, you will get a passive Perception check as if you were awake. Succeeding in that check will result in you waking. You may then make a standard Perception check, upon waking, and before any actions by that creature.