Multiattack

The moon drake makes three attacks: one with its bite and two with its claws.

Bite

Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 5) piercing damage plus 5 (1d10) radiant damage. A shapechanger that takes radiant damage from this attack instantly reverts to its true form and can't assume a different form for 1d4 rounds.

Claw

Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 8 (1d6 + 5) slashing damage.

Moonlight Nip

Melee Weapon Attack: +6 to hit, reach 5 ft., one creature afflicted with lycanthropy. Hit: The target must succeed on a DC 15 Constitution saving throw or be cured of lycanthropy (it can willingly fail this save). This attack can't cure a natural born lycanthrope of the curse of lycanthropy.

Lunarbeam (Recharge 5-6)

The drake exhales searing moonlight in a 60-foot line that is 5 feet wide. Each creature in that area must make a DC 15 Constitution saving throw, taking 33 (6d10) radiant damage on a failed save, or half as much damage on a successful one. A shapechanger makes its saving throw with disadvantage. If it fails, it also instantly reverts to its true form and can't assume a different form for 1d4 rounds.