Bat Wyvern

Sunlight Sensitivity. While in sunlight, the bat wyvern has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.

Blind Senses. The bat wyvern can't use its blindsight while deafened and unable to smell.

Innate Spellcasting. The bat wyvern spellcasting ability is Wisdom (spell save DC 13). It can innately cast the following spells, requiring no material components:

At will: poison spray

1/day each: darkness, hold person

Multiattack. The bat wyvern makes two attacks: one with its bite and one with its stinger. While flying, it can use its claws in place of one other attack.

Bite. Melee Weapon Attack: +7 to hit, reach 10 ft., one creature. Hit: 12 (3d6 + 4) piercing damage.

Claws. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 17 (3d8 + 4) slashing damage.

Stinger. Melee Weapon Attack: +7 to hit, reach 10 ft., one creature. Hit: 12 (3d6 + 4) piercing damage. The target must make a DC 15 Constitution saving throw, taking 28 (6d8) poison damage on a failed save and becoming blind, on a successful one you prevent the blindness and take half damage.

The bat wyvern can take 2 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The bat wyvern regains spent legendary actions at the start of its turn.

Bite. The bat wyvern makes a bite attack.

Cast. The bat wyvern casts a spell.

Hide(Costs 2 Actions). The bat wyvern flies 30 ft in one direction and makes a stealth (Dexterity) check.