Chimera of Embers

Inflamed Surveillance. A chimera of embers has its body in continuum blazing, never sleeps, and magic can't put it to sleep. Anytime a creature attempts to make a melee attack in chimera of embers, it suffers 2 (1d4) fire damage.

Drafted Corruption. Instead of a dragon head, chimera of embers has a devil head and a viper head at the tip of its tail, granting magic resistance and devil's sight.

Magic Resistance. The chimera has advantage on saving throws against spells and other magical effects.

Devil's Sight. Magical darkness doesn't impede the chimera's darkvision.

Multiattack: The chimera makes three attacks: one with its bite, one with its horns, and one with its claws. When it's evil breath is available, a whole action must use it. 

Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 2) piercing damage plus 4 (1d6) fire damage.

Horns. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 10 (1d12 + 2) bludgeoning damage plus 4 (1d6) fire damage.

Claws. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 3) slashing damage plus 4 (1d6) fire damage.

Chromatic Breath (Recharges 5-6). The chimera of embers shoots three of the following breath weapons, choosing multiple targets it can see within 60 feet of it:

Hurl Flame. Ranged Spell Attack: +8 to hit, range 60 ft., one target. Hit: 14 (4d6) fire damage. If the target is a flammable object that isn't being worn or carried, it also catches fire.

Poison Breath. The viper head exhales poisonous gas in a 60-foot cone. Each creature in that area must make a DC 15 Constitution saving throw, taking 15 (4d6) poison damage on a failed save, or half as much damage on a successful one.

Pestilence Breath. The goat head exhales a virulent disease in a 60-­foot line that is 10 feet wide. Each target in that area must make a DC 15 Constitution saving throw. On a failed save, it takes 20 (5d6) necrotic damage, or half as much damage on a successful save. If the target fails the saving throw, its hit point maximum is reduced for 1 hour by an amount equal to the necrotic damage it took. Any effect that removes a disease allows a creature’s hit point maximum to return to normal before that time passes. If a target is immune to disease, it is immune to this breath attack's secondary effect.