Illumination: The flameskull sheds either dim light in a 15-foot radius, or bright light in a 15-foot radius and dim light for an additional 15 feet. It can switch between the options as an action.Magic Resistance: The flameskull has advantage on saving throws against spells and other magical effects. Rejuvenation: If the flameskull is destroyed, it regains all its hit points in 1 hour unless holy water is sprinkled on its remains or a dispel magic or remove curse spell is cast on them. (Int based spell save DC 13, +5 to hit with spell attacks). Cantrip (at will): mage hand•1st level (3 slots): magic missile, shield•2nd level (2 slots): blur,flaming sphere•3rd level (1 slot):fireball
Multiattack. The flarneskull makes two attacks with its Fire Ray.
Fire Ray. Ranged Spell Attack: +5 to hit, range 30 ft., one target. Hit: 10 (3d6) fire damage.