Way of the Flames V1.2.5

Monks of the way of Fire are attuned to fire and live with it every day (I couldn't make a backstory, ill make it in v1.5)

Flaming Fists

When you roll an unarmed strike hit dice against an enemy, if you get more than a 15, your fists imbue in flames, and when hitting an enemy, they take 1d4 burn damage extra every turn or any time it is attacked until the end of your next turn. The burn damage increases to 2d4, 3d4's, and 4d4's at levels 9, 12, and 15 respectively.

One With The Flames

You are attuned with flames, and gain fire resistance (you take 1/2 damage against fire). You can use 2 ki points to use produce flame, control flame, burning hands, or firebolt. 

Speed Demon

+2 DEX

Flame Drop

Use 3 Ki to use Flame Drop, and gains a +1 in the dexterity modifier.

Total Desolation

You can summon an avatar of pure fire for 6 ki. The avatar can be shaped to be anything from 1-20 feet tall. It follows your every order and has 350 hp. It deals 2d6 damage to any that attack it. The user also gains access to Meteor Swarm for 4 ki. The avatar lasts for 5 rounds.