Burning Hellfire

You open a portal to the Nine Hells and cause a creature within range to erupt in flames. 

The target must succeed on a Charisma saving throw or take 2d8 Fire damage.  Additionally the target must put out the Hellfire; otherwise, they take damage every turn.  

Hellfire damage type

Hellfire is a type of magical fire originating from the Nine Hells.  It ignores ordinary Fire Resistance/Immunity.  It also must be extinguished or it will keep burning. 

Hellfire can be extinguished with magical Healing, a Remove Curse or Dispel Evil spell.

• Devils and creatures that inhabit the Nine Hells are Immune to Hellfire damage. 
• Demons and creatures that inhabit the Abyss are Resistant to Hellfire damage. 
• Celestials and inhabitants of the Upper Planes are Vulnerable to Hellfire damage.  

If a target with a soul dies from Hellfire damage, it's soul is sucked into the portal and transported to the Nine Hells.   

At Higher Levels. The spell’s damage increases by 1d8 for every additional spell level.