Radiant Eyes. While its eyes are open, a blindheim projects bright light in a 60-foot cone and dim light for an additional 60 feet. It sets the orientation of this cone at the end of each of its turns. All creatures that can see the blindheim have disadvantage on attack rolls while in the area of bright light and within 15 feet of the blindheim. Creatures with the Sunlight Sensitivity trait that can see the blindheim have disadvantage on attack rolls anywhere in the area of bright light.
Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) piercing damage.
Radiant Blast. Radiant energy erupts from the blindheim's eyes in a 15-foot cone. Each creature in that area must succeed on a DC 12 Constitution saving throw or take 7 (2d6) radiant damage and be blinded until the end of the blindheim's next turn. Creatures with the Sunlight Sensitivity trait have disadvantage on this saving throw.
These frog-like humanoids have the ability to project intense, blinding light from their eyes. Dwelling on the fringes of the Underdark, blindheims are opportunistic ambushers who can be swayed into service with payment of fresh food and metal weapons. A blindheim's radiant eyes make these creatures a unique source of light in the Underdark depths, and are bright enough to hinder creatures that suffer in the presence of bright light—or to destroy their foes.