Wyvern

Large dragon, unaligned

Armor Class: 13 (natural armor)
Hit Points: 110 (13d10 + 39)
Speed: 20 ft., fly 80 ft.

STR: 19 (+4)
DEX: 10 (+0)
CON: 16 (+3)
INT: 5 (−3)
WIS: 12 (+1)
CHA: 6 (−2)

Skills: Perception +4
Senses: darkvision 60 ft., 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 10 ft., one creature. Hit: 11 (2d6 + 4) piercing damage.

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

Stinger. Melee Weapon Attack: +7 to hit, reach 10 ft., 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.

Running this fight? Add the wyvern to the initiative tracker: type its name and the AC, hit points and initiative bonus fill in, and the book button shows this stat block mid-fight.