Path of the Demon

Your Rage comes from Having demon blood in you.

Hellish Resistance

While rageing you are also resistente to fire and cold damage

Hellish Fury

While raging, you can choose to frenzy. You can make a single melee weapon attack as a bonus action on each of your turns after this one. When your rage ends, you suffer one level of exhaustion. The exhaustion goes away if you are raging and come back at the end of that rage as well as any additional levels of exhaustion that you have picked up. You also get 1 frenzy free each long rest( meaning it does not give you a level of exhaustion.).

Fiendish Vigor

Beginning at 6th level, At the start of each of your turns while raging, you regain hit points equal to 1 + 2 times your Constitution modifier (minimum of 1). You also can get rid of a level of exhaustion by expending a hit die on a short rest. You do not gain any hit points from this hit die.

Demonic Wings

You sprout demonic wings. With your wings, you have a flying speed of 50 feet if you aren’t wearing heavy armor and aren’t exceeding your carrying capacity.

Retaliation

Starting at 14th level, when you take damage from a creature that is within 5 feet of you, you can use your reaction to make a melee weapon attack against that creature.