The Lord of Flames

As a warlock sworn into a pact with a Fire Elemental or primordial deity, fire is your lifeblood and your purpose. These creatures are typically neutrally aligned, and have little investment in the Prime Material Plane, aside from thoroughly enjoying burning it to a crisp. It is unclear whether this urge is of malicious or benevolent intent, bringing their home to a world that seems barren of life and energy, but the result is the same. Your love for and interest in fire is unmatched, and any way that you can promote its influence on the world will increase favor with your patron. Unsurprisingly, they are at eternal war with the beings from the Plane of Water, so any extended time spent on or near the water that isn't used to destroy it will be seen unfavorably. What you choose to do with your powers is of little concern to your patron, and you will likely not hear much from them.

The primary of these are Kossuth and Marrake al-Sidan al-Hariq ben Lazan, but you may also choose to enter a pact with an unnamed fire elemental or Efreet.

Expanded Spell List

The Lord of Flames lets you choose from an expanded list of spells when you learn a warlock spell. The following spells are added to the warlock spell list for you.

Lord of Flames Expanded Spells

Spell Level	Spells
1st	burning hands, fog cloud
2nd	flaming sphere, scorching ray
3rd	fireball, protection from energy
4th	fire shield, wall of fire
5th	flame strike, immolation

Touch of Flame

At 1st level, you have the ability to shape flame around you to your will. You gain the cantrip "Control Flames" and the spell "Absorb Elements."

You can also choose, at any given casting, whether your eldritch blast will use the standard force damage or if it will instead deal the same amount of dice in fire damage.

Lord's Comforts

Seeing and feeling the warmth of the fire as you end your adventures reminds you that you are being watched over by a force far greater than your own. You are invigorated by your proximity to the plane of your power through the long rest, and when you begin your travels after this, you begin with temporary hit points equal to your Warlock level. 

Unyielding Heat

Starting at 6th level, your patron reveals to you the intensity of the Elemental Plane of Fire and allows you to harness some of its totality. Any fire damage you deal, be it from spells or class features, will tap into that energy to ignore the creature's resistance to it.

Aspect of Fire

Starting at 10th level, the burning nature of your patron flows through your veins, and with the knowledge of their home plane that you've already acquired, understand how to use it to affect your form. With the fire that now lives inside of you, you are naturally resistant to fire damage. You can also, once per day, polymorph yourself into a fire elemental.

Forceful Conflagration

Starting at 14th level, when you hit a creature with an attack, you can use this feature to instantly transport the target through the Plane of Fire. The creature disappears and hurtles through a nightmare landscape.

At the end of your next turn, the target returns to the space it previously occupied, or the nearest unoccupied space. If the target does not originate from the Plane of Fire, it takes 10d10 fire damage as its flesh crackles and its hair singes.

Once you use this feature, you can’t use it again until you finish a long rest.