Behemoth, The Intimidation Drake

Legendary Resistance (1/Day). If Behemoth fails a saving throw, it can choose to succeed instead.

Multiattack. Behemoth can make one attack with its bite and two with its claws

Bite. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 7 (1d8 + 5) radiant damage plus an additional (2d8) fire damage. 

Claw. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 4 (1d6 + 5) radiant damage plus an additional (2d6) fire damage. 

Intimidating Presence. Each creature of Behemoth's choice that is within 120 feet of the dragon 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 Behemoth's Frightful Presence for the next 24 hours.

Fire Breath (Recharge 5–6). Behemoth exhales fire in a 60-foot line that is 5 feet wide. Each creature in that line must make a DC 18 Dexterity saving throw, taking 18 (6d6) fire damage on a failed save, or half as much damage on a successful one.