Divine Infurnis Cloak (5e Equipment)
From D&D Wiki
Cloak (Magical Item), Legendary (requires attunement)
A wine red and charcoal black cloak that smells of embers in the fall wind.
Loved by Fire: Wielder is immune to fire damage and regains half of any fire damage that would be inflicted as temporary hit points.
Live by the Flame: Add +2 to any attack rolls and damage rolls that would inflict fire damage.
Scorched Earth: Able to cast a 9th level Firestorm centered on the user wisdom modifier times per day.
Burned Skin: When the user is grappled the assailant takes 1d4 fire damage on the start of their turn.
Ash Scales: Fire is the ultimate protection from all things, add +2 to AC.