The Phoenix

This subclass is 1 of a set of 4 being developed, one for each elder elemental as an optional patron of elemental power (including a rework of the phoenix already out there). All aspects of my classes are somewhat derived from other spells or warlock abilities and should be quite balanced. However, I'm open to suggestions.

You have bound yourself to an elder elemental known as Phoenix.  The Phoenix pushes its followers toward impulsive, violent behavior.  It seeks to burn the world and you with it.  The powers it grant you allow you to follow in its footsteps.  Through the gifts and powers it bestows upon you, it hopes to one day join you on your plane of existence, where it can burn gloriously.

Expanded Spell List

The Phoenix 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.

Phoenix Expanded Spells

Spell Level	Spells
1st	burning hands, faerie fire
2nd	continual flame, scorching ray
3rd	fireball, revivify
4th	fire shield, wall of fire
5th	flame strike, immolation

Bonus Cantrips

At 1st level, you learn the produce flame and control flames cantrips.  They count as warlock cantrips for you, but they don't count against your number of cantrips known.

Wrath of Flame

At first level 1, when a creature within 5 feet of you that you can see hits you with an attack, you can use your reaction to cause the creature to make a Dexterity saving throw. The creature takes 2d8 fire damage on a failed saving throw, and half as much on a successful one.

You can use this feature a number of times equal to your Charisma modifier (minimum of once). You regain all expended uses when you finish a long rest.

Feathers of Flame

Starting at 6th level, when you cast a spell that deals fire damage, you can add your Charisma modifier to the damage it deals on a hit as feathers of flame follow each spell and detonate.

Burning Soul

Starting at 10th level, you can use a bonus action to gain resistance to fire and cold as you become wreathed in flame for 1 minute.  For the duration you are able to bolster all of your spell attacks by 1d6 fire damage, and you shed bright light for 30 feet and dim light for another 30 feet as flames dance from your body.  Additionally, any attacker that makes a melee attack against you takes additional fire damage equal to your Charisma modifier.

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

Phoenix Feather

At level 14 you are imbued with the power of the phoenix.  The first time you would drop to 0 HP you are instead reduced to 1 HP as you burst in a ball of flame. Each creature within 10-feet of you must make a Dexterity saving throw, taking 6d8 fire damage on a failed save, or half as much damage on a successful one.  You adjust your initiative to directly follow the one that triggered this event and go next. 

Once you use this feature, you cannot use it again for 1d4 days.