Inferno Domain

Gods of fire are often worshiped by clerics with an obsession with or deep respect for the destructive nature of flame. These deities are temperamental, and might give fire to a primitive race one day, only to smite them from existence the next. Cultures of northern regions might worship a fire god out of respect and in thanksgiving for the warmth that flame provides. A tropical culture might live in the shadow of a volcano, and worship a fire god out of fear and supplication, begging the deity to let the volcano lay dormant.
     In some campaign settings, clerics of the Fire Domain do not worship a god of fire, but the Elemental Plane of Fire itself.

Bonus Proficiency

When you choose this domain at 1st level, you gain proficiency with heavy armor, and Blacksmithing tools

Tongue of Fire

When you choose this domain at 1st level, you gain one cantrip that deals fire damage. It counts as a cleric cantrip for you, and does not count against your number of cantrips known. In addition, you can speak, read, and write Ignan.

Channel Divinity: Stoke The Flames

Starting at 2nd level, you can use your Channel Divinity to cause the flames created by your spells to burn with an intensity stoked by divine power.

When you roll fire damage, after you have rolled you can use your Channel Divinity to deal maximum damage to a single target, instead of what you rolled.

 

Searing Radiance

 

Beginning at 6th level, when you would cast a spell that deals fire damage, you can choose for half of the damage dealt to be radiant damage, and the rest to be fire damage.

You must make this decision before you resolve the spell’s effect.

Powerful Spellcasting

 

Beginning at 8th level, when you deal damage with any cleric spell that deals Fire damage, you can add your Wisdom modifier to the damage.

Untouched by Flame

Starting at 17th level, you become immune to fire damage.