Aurak Draconian

Death Throes. If the Aurak starts its turn with 20 hit points or fewer, it bursts into green flames and enters a frenzy. While in a frenzy the Aurak has advantage on melee attack rolls, but it can't cast spells.  The Aurak must use its action to make melee attacks against the nearest enemy, these attacks deal an additional 3 (1d6) fire damage.

A creature that starts its turn within 5 feet of the Aurak or moves within 5 feet of it must make a DC 15 Dexterity saving throw, taking 7 (2d6) fire damage on a failed save, or half as much damage on a successful one.

At the start of each of the Aurak's turns while it is in this frenzy, it must make a DC 20 Constitution saving throw. If it fails the saving throw or is reduced to 0 hit points, it dies.  If at the end of its turn the Aurak has more than 20 hit points the frenzy ends.

When the Aurak dies it's body explodes in a burst of greenish lightning.  All creatures within 15 ft. must make a Dexterity saving throw taking 14 (4d6) lightning damage on a failed save, or half as much damage on a successful one.

Disease Immunity. Aurak draconians are immune to all diseases.

Draconic Heritage. Aurak draconians cannot be put to sleep by magic.

Innate Spellcasting. The Aurak's innate Spellcasting ability is Charisma (spell save DC 17, +9 to hit with spell attacks). The Aurak can innately cast the following spells, requiring no material components:

At will: eldritch blast, greater invisibility and suggestion

3/day: disguise self and misty step Note: When you use this version of disguise self, you can seem up to 3 feet shorter than normal, allowing you to more easily blend in with smaller races.

1/day: dominate person

Inspired by Dragons. Draconians were created to serve alongside evil true dragons. When they fight alongside them, their morale and zealousness allow them to fight with greater ferocity than normal. When under the command of a true dragon, Auraks get Advantage on all attack rolls and saving throws.

Low Metabolism. Aurak draconians can survive on meager and sparse nourishment. They require only one-tenth of the food and water it takes to sustain a human.

Magic Resistance. Draconians have Advantage on saving throws against spells and magical effects.

Spellcasting. The Aurak is an 8th level spellcaster. Its spellcasting ability is Charisma (spell save DC 17, +9 to hit with spell attacks). The Aurak has following sorcerer spells prepared:

Cantrips (at will): fire bolt, friends, mage hand, message, and poison spray

1st level (4 slots): chromatic orb, magic missile, and shield

2nd level (3 slots): mirror image and scorching ray

3rd level (3 slots): lightning bolt and slow

4th level (2 slots): dimension door and polymorph

Multiattack. The Aurak makes three melee attacks: one with its bite and two with its claws.

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., 1 target. Hit: 5 (1d8 + 1) piercing damage. 

Claw. Melee Weapon Attack: +5 to hit, reach 5 ft., 1 target. Hit: 4 (1d6 + 1) piercing damage.

Eldritch Blast. Ranged Spell Attack: +9 to hit, reach 120 ft., 2 targets. Hit: 9 (1d10 + 4) force damage each.

Breath Weapon (recharge 5-6). An Aurak can breath a cloud of noxious gas in a 15-ft. cone. Each creature in the area must make a DC 15 Constitution saving throw, taking 11 (2d10) poison damage and be blinded until the end of the Aurak's next turn on a failed save, or only half as much damage and isn't blinded on a successful one.