Eternal Eye

(This spell is 10th level and is normally unobtainable by standard player characters).

You bestow upon yourself unparallel visual prowess. For the duration, you are immune to the blinded condition, cannot be surprised, have 300 feet of truesight, and can see though any and all barriers within a 1 mile radius centered on yourself. In addition, other creatures have disadvantage on attack rolls against you and automatically fail stealth checks to hide from you if they are within 1 mile of you. This effect cannot be dispelled and continues to function in an antimagic field. When this spell ends, you must succeed a DC 20 Constitution saving throw or gain 2 levels of exhaustion.

Once you have cast this spell, you cannot do so again for 2d4 days.