Base Class: Sorcerer
The magic of the abyss courses through you. Abyssal hellfire, demonic magic, and more are available to you.
(Note: If you have a tail and one of the traits gives you a tail, your tail simply changes to the tail from the trait.)
Choose Abyssal or Infernal. You may now speak, read and write in this language. Furthermore, when you make a charisma check with a fiend that speaks this language, you do so with advantage.
Your skin turns a dark shade of red. Your grow a tail similar to a tiefling's.
Your eyes look unnatural and you have slitted pupils. Your hands grow claws.
Starting at 1st level, your power over Brimstone flames has begun. (Abyssal)When you deal fire damage with a spell, you may deal additional fire damage equal to your proficiency bonus. (Infernal)You may make the damage for the spell's damage ignore resistances and to fire unless the creature is a fiend.
When you deal fire damage with a spell, you may deal extra damage equal to your proficiency bonus.
When you deal fire damage with a spell, you may choose to ignore resistances to fire that the target(s) may have, unless the target is a fiend.
Starting at 6th level, the flames of Unholy power do not harm you anymore. You gain resistance to fire damage. If you already have resistance to fire damage, you gain immunity to it. In addition, when you cast a spell that deals fire damage, you spend 2 sorcery point to cast it at one level higher.
At 14th level, you gain the ability to sprout a pair of demon wings from your back, gaining a flying speed equal to half your current speed as well as a spiked tail that is a natural melee weapon that you're proficient in. The tail deals 1d10+strength piercing damage on a hit. You can create these traits as an action on your turn. They last until you dismiss them as an action on your turn.
You can’t manifest these traits while wearing armor unless the armor is made to accommodate them, and clothing not made to accommodate your traits might be destroyed when you manifest them.
Beginning at 18th level, you can channel the dread power of your unholy self. No creature has immunity or resistance to fire damage from your spells.