(General)
Your senses seek out threats even while you sleep.
Prerequisites
Wisdom 13,
Alertness.
Benefit
The DCs of your
Perception checks don't change when you are asleep. If you succeed at a
Perception check to notice something dangerous while asleep, you can wake up to confront the danger.
Normal
The DC for any
Perception check attempted by a sleeping creature is increased by 10.