Symphony of the Night

Symphony of the Night - Hidden Perk
Under the boon of moonlight (or lack of light), you imitate a vampire's natural affinity to the dark. Passive bonuses are granted to both vision and stealth. You can see as well in the dark as in comfortable light. In addition, while attempting stealth you're muffled and leave no footprints. This bonus is broken by taking a combat action and is returned a minute after your last combat action is taken. While under the effect of this perk, you may at any time null all but one of your senses. In this state, the focused sense acts as though your Agility score were quadrupled, and nulled senses act as though your Agility were zero. Unless gradually reacclimated to sunlight (via a sunrise or a similar event), you suffer -10% (minimum of 5) to Agility, Endurance, and Charisma for ten minutes following initial exposure.