Legendary Resistance (3/Day). If the wyvern fails a saving throw, it can choose to succeed instead.
Multiattack. The wyvern makes two attacks: one with its beak and one with its stinger. While flying, it can use its claws in place of one other attack.
Beak. Melee Weapon Attack: +13 to hit, reach 10 ft., one target. Hit: 27 (4d8 + 9) piercing damage.
Claws. Melee Weapon Attack: +13 to hit, reach 5 ft., one target. Hit: 23 (4d6 + 9) slashing damage, and the target is grappled (escape DC 19). Until this grapple ends, the target is restrained, and the wyvern can't use its claws on another target.
Stinger. Melee Weapon Attack: +13 to hit, reach 10 ft., one target. Hit: 27 (4d8 + 9) piercing damage. The target must make a DC 17 Constitution saving throw, taking 24 (7d6) poison damage on a failed save, or half as much damage on a successful one.
The wyvern can take up to three reactions per round but only one per turn.
Reactive Rend. After using Legendary Resistance or in response to being hit by an attack roll, the wyvern makes one Beak attack or Stinger attack.
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