Motion Sense

MOTION SENSE
Cost: 0.5 PP
Able to sense movement in her immediate vicinity, an adept with this power becomes a living motion sensor and is very difficult to sneak up on or ambush. Through a combination of natural and magical senses, the adept feels the movement of people, animals, or objects by their displacement of air molecules, changes in ambient barometric pressure, vibrations, or the minute disruption of the local mana field. This feeling alerts the adept to movement around her equal to (Magic) meters and can be used to detect living beings or objects that would otherwise be hidden by normal senses such as sight, sound, or smell. The size of the target also directly affects the adept’s ability to sense it.
To use this power, the adept must first make a Perception + Magic [Mental] test. The threshold for this test is based on the size of whatever the adept is attempting to sense; consult the Motion Sense table for results.  
MOVING THING IS THRESHOLD
Smaller than dog/cat 3
Smaller than average metahuman (dwarf) 2
Average metahuman (human, ork, elf) 1
Larger than average (troll) Automatic success
 

SG 172-173