Phoenix Knight

Fighters who choose this archetype, have harnessed the powers of a phoenix. They've learned to use fire-related attacks to quickly deal tons of damage.

Fire Resistance

At level 3, when you choose this Archetype, you gain resistance to fire damage.

Fiery Rebirth

Starting at 3rd level, whenever damage reduces you to 0 hit points, you can make a Constitution saving throw (DC 5 + the damage taken). On a success, you instead drop to 1 hit point, and you let out a burst of fiery energy that surrounds you for a split second. Any creature within 5 ft. of you must make a Dexterity saving throw (DC 8 + Constitution modifier + proficiency bonus) or take 1d6 fire damage on a failed one, and half the damage on a successful one. Any flammable objects in range that aren't being carried or worn, ignites into flames. You can’t use this feature if you are reduced to 0 hit points by cold damage or by a critical hit.

After the saving throw succeeds, you can’t use this feature again until you finish a long rest.

Burning Strikes

Starting at 7th level, you learn the Fire Bolt cantrip, along with one other spell of your choice that deals fire damage. This spell must be 2nd level or lower, and after using it you can't use it again until after taking a long rest (You use Constitution for your spellcasting ability, for any spells you learn for this class). Additionally, your unarmed strikes now deal an extra 1d4 fire damage

Scorching Protection

When you reach 10th level you can now cast the Fire Shield spell. When you cast this spell though, you can only summon the fire shield and not the cold one. 

After using Fire Shield, you can't use it again until after you've taken a long rest.

Wings of the Phoenix

Starting at 15th level, you can use a bonus action to manifest a pair of fiery wings from your back. While the wings are present, you have a flying speed of 50 feet. The wings last until you’re incapacitated, you die, or you dismiss them as a bonus action.

The wings shed bright light in a 60-foot radius and dim light for an additional 30 feet.

Blazing Fury

Starting at level 18, as a bonus action, you can let yourself be consumed by flames, and the internal inferno, that resides deep in your being (this lasts for one minute). Whenever someone makes a melee attack against you they take 1d4 fire damage + your constitution modifier. Your flames are so hot, that you have immunity against cold and fire damage, and your flames cover your weapon (as long as it’s not made of wood), causing them to deal an extra 1d12 fire damage on a hit.

The flames shed bright light in a 60-foot radius and dim light for an additional 30 feet.