Drow Piwafwi Cloak

Grants advantage on stealth checks. Also incurs disadvantage on perception checks while used in the Underdark or to Underdark inhabitants such as Drow and Duergar who use Infravision to enhance their darkvision. Loses its power if in direct sunlight for more than an hour, but regains its enchantment at moonrise.
Spun from Lolth's demon spider silk, this cloak can mimic natural terrain features around it. It sucks up heat around it, chilling the user and hiding them from Infravision and heat sensing.