This elegant garment is made from exquisite cloth of white, gray, or black and adorned with silvery runes. The robe's color corresponds to the alignment for which the item was created. While you wear the robe, your base AC is 15 + your Dexterity modifier if you are not wearing armor. You have advantage on saving throws against spells and other magical effects. Your spell save DC and spell attack bonus each increase by 2.