Nurvureem, The Dark Lady

Nurvureem can breathe air and water.

If Nurvureem fails a saving throw, it can choose to succeed instead.

Nurvureem can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.

Melee Weapon Attack +11 to hit, reach 10 ft., one target. 17 (2d10 + 6) Piercing damage plus 4 (1d8) Acid damage.

Melee Weapon Attack +11 to hit, reach 5 ft., one target. 13 (2d6 + 6) Slashing damage.

Melee Weapon Attack +11 to hit, reach 15 ft., one target. 15 (2d8 + 6) Bludgeoning damage.

Each creature of Nurvureem's choice that is within 120 feet of Nurvureem and aware of it must succeed on a DC 16 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 Nurvureem's Frightful Presence for the next 24 hours.

Nurvureem exhales acid in a 60-foot line that is 5 feet wide. Each creature in that line must make a DC 18 Dexterity saving throw, taking 54 (12d8) Acid damage on a failed save, or half as much damage on a successful one.

Nurvureem makes a Wisdom (Perception) check.

Nurvureem makes a tail attack.

Nurvureem beats its wings. Each creature within 10 feet of Nurvureem must succeed on a DC 19 Dexterity saving throw or take 13 (2d6 + 6) Bludgeoning damage and be knocked Prone. Nurvureem can then fly up to half its flying speed.