Wyvern

Large dragon, unaligned

Armor Class 13 (natural armor)

Hit Points 110 (13d10+39)

Speed 20ft., fly 80ft.

Skills Perception +4

Senses darkvision 60ft., passive Perception 14

Languages -

Challenge 6 (2,300 XP)

Actions

Multiattack

The 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 10ft., one creature.
Hit: 11 (2d6+4) piercing damage.

Claws

Melee Weapon Attack: +7 to hit, reach 5ft., one target.
Hit: 13 (2d8+4) slashing damage.

Stinger

Melee Weapon Attack: +7 to hit, reach 10ft., one creature.
Hit: 11 (2d6+4) piercing damage. The target must make a DC 15 Constitution saving throw, taking 24 (7d6) poison damage on a failed save, or half as much damage on a successful one.