Legendary Resistances (3/day): If the dragon fails a saving throw, it can choose to succeed instead. Rampage: When the dragon reduces a creature to 0 hit points with a melee attack on its turn, the dragon can take a bonus action to move up to half its speed and make a bite attack.

Actions

Multiattack: the dragon can use its Frightful Presence. It then makes 3 attacks, one with its bite and 2 with its claws. Either or both attack with its claws can be substituted with its Greatsword.

the dragon can use its Frightful Presence. It then makes 3 attacks, one with its bite and 2 with its claws. Either or both attack with its claws can be substituted with its Greatsword. Bite: Melee Weapon Attack +12 to hit; reach 10ft; one target; Hit: (2d10+7) piercing plus (1d10) necrotic damage.

Melee Weapon Attack +12 to hit; reach 10ft; one target; Hit: (2d10+7) piercing plus (1d10) necrotic damage. Claw: Melee Weapon Attack +12 to hit; reach 5ft; one target; Hit (2d6+7) slashing damage.

Melee Weapon Attack +12 to hit; reach 5ft; one target; Hit (2d6+7) slashing damage. Tail: Melee Weapon Attack +12 to hit; reach 5ft; one target; Hit (2d8+7) bludgeoning damage.

Melee Weapon Attack +12 to hit; reach 5ft; one target; Hit (2d8+7) bludgeoning damage. Greatsword: Melee Weapon Attack +12 to hit; reach 10ft; one target; Hit (2d6+7) slashing damage.

Melee Weapon Attack +12 to hit; reach 10ft; one target; Hit (2d6+7) slashing damage. Frightful Presence: Each creature of the dragon's choice that is within 120 ft. of the dragon and aware of it must succeed on a DC 17 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the dragon's Frightful Presence for the next 24 hours.

Each creature of the dragon's choice that is within 120 ft. of the dragon and aware of it must succeed on a DC 17 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the dragon's Frightful Presence for the next 24 hours. Necrotic Breath (Recharge 5-6): The dragon exhales necrotic energy in a 60-foot cone. Each creature in that area must make a DC 21 Dexterity saving throw, taking 63 (18d6) necrotic damage on a failed save, or half as much damage on a successful one.

Legendary Actions

The Gnoll Dragon can take 3 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. Gnoll Dragon regains spent legendary actions at the start of their turn.