Pyromancer

Your inner flame shines bright as you sear and burn your foes to ashes.

Fire Speaker

The arcane magic you command is infused with elemental fire. You can speak, read, and write Primordial. Knowing this language allows you to understand and be understood by those who speak its dialects: Aquan, Auran, Ignan, and Terran.

Pyromaniac

Starting at 1st level, once on your turn, when you cast a spell of 1st level or higher that deals fire damage. You can use your bonus action to cause each creature that failed its saving throw or was hit by a spell attack to catch fire, taking 1d4 fire damage at the start of each of its turns. This effect lasts for 1 minute or until a creature uses its action to douse the flame ending the affect.

This ability has no affect against creatures that have resistance or immunity to fire damage.

The damage of this ability increases at 6th (1d6), 14th (1d8), and 18th (1d10).

Heart of Flame

At 6th level, you gain resistance to fire damage, and your sorcerer spells and abilities ignore resistance to fire damage.

Eruption

At 14th level, Whenever you cast a spell of 1st level or higher that deals fire damage, you can choose to cause fiery magic to erupt from one target that took damage from the spell. Each creature of your choice within 10 feet of the target takes fire damage equal to your sorcerer level.

Pyroclasmic Form

At 18th level, you gain immunity fire damage.

You also can spend 6 sorcery points as a bonus action to to magically transform yourself into a fiery form. In this form, you have resistance to cold, poison, bludgeoning, slashing, and piercing damage, and you can move through other creatures and through spaces with openings as small as 1 inch as if they were both difficult terrain. While within a space that is smaller than 1 foot wide, you cannot attack or cast spells. Additionally, you immunity to fire damage for your sorcerer spells and abilities.

Additionally, while in this form, whenever a creature within 5 feet of you, hits you with an attack, they take 1d10 fire damage and catch fire as if under the affect of your Pyromaniac feature.

You remain in this form for 1 minute. It ends early if you are incapacitated, if you die, or if you dismiss it as a bonus action.