Blightwood's Flaming Fury

This spell creates a fiery aura around you, turning you into a black silhouette resembling ash, with glowing eyes and mouth on the face. All items being worn or wielded is magically dismissed and will be returned after the spell ends, you do not continue to reap the benefits of these items. You lose concentration on any spell using concentration on and do not regain it after the spell ends.

While under the effects of this spell the ability score used for your magic is reduced to ten, and any points you lose are distributed to either your Strength or Dexterity. While under the effects of the spell you get the following benefits:

Flame Immunity: you are immune to all fire damage. If a spell involving flame involves a save you roll the save anyway. On a successful save you add an additional damage die to any damage based ability given by the spell for one round

Unarmed Strike: Your Unarmed strikes are 2D6 fire damage plus your strength or dexterity modifier

Flaming Aura: Anyone who ends there turn within 5ft of you takes 1d4 fire damage. an additional d4 is added for each round they spend within. 

Flaming Blast: you can use an action to send a blast of fire to a target at a range of 30ft. Target must make a Dexterity saving throw. On a failed save target takes 4d10 fire damage or half on a successful save. (Spell save DC acts as if your ability score is unchanged)

Flame Spread: Any flammable object you touch catches on fire and spreads 5 feet every other round

Spell can only be dismissed on a successful wisdom save (if your spell ability is wisdom then roll as if it is unchanged) on a failed save you lose control of yourself and can only be dismissed if duration of spell is met or fall unconscious