Multiattack

The lunar devil makes one Bite attack, one Claw attack, and one Tail attack, or it makes three Hurl Moonlight attacks.

Bite

Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 16 (2d10 + 5) piercing damage plus 9 (2d8) cold damage.

Claw

Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 12 (2d6 + 5) slashing damage.

Tail

Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 14 (2d8 + 5) bludgeoning damage.

Hurl Moonlight

Ranged Spell Attack: +7 to hit, range 150 ft., one target. Hit: 17 (3d8 + 4) cold damage, and the target must succeed on a DC 15 Constitution saving throw or become blinded until the end of its next turn.

Summon Devil (1/Day)

The lunar devil magically calls 1d4 giant owls that are Fiends with the lunar devil's damage resistances and immunities (but not its Light Incorporeality trait). The lunar devil has a 25 percent chance of calling one lunar devil instead. The called creatures arrive in 1d4 rounds, acting as allies of the devil and obeying its telepathic commands. The creatures remain for 1 hour, until the devil dies, or until the devil dismisses them as a bonus action.

Spellcasting

The lunar devil casts one of the following spells, requiring no material components and using Charisma as the spellcasting ability (spell save DC 15): At will: fly, major image 3/day: greater invisibility 1/day: wall of ice