I have created a new subclass for warlocks that is designed to be an option for those who would like to make a pact with a djinn or other mighty creature of Elemental Air.
Is this balanced as compared to the other warlock patrons?
Elemental Air patron
You know the gust cantrip, and it does not count against your warlock cantrips known.
Additional cantrips are not that unusual for subclasses, like the Celestial. I'm not really worried about this one.
Expanded Spell List
The following spells are added to the warlock spell list for you.
1st level: feather fall, thunderwave
3rd level: gust of wind, levitate
7th level: call lightning, wind wall
9th level: storm sphere, freedom of movement
5th level: cone of cold, control winds
I'm hoping these spells aren't too powerful for the warlock.
You have been endowed with the ability to communicate with creatures of elemental air. You speak, read, and write Auran.
One added language should not change power level that much.
Starting at 1st level, when you cast a warlock spell of 1st level or higher that deals acid, cold, fire, force, necrotic, poison, psychic or radiant damage, you can change the damage type to thunder or lightning (your choice).
Seems powerful, but I'm hoping that limiting it to lightning and thunder damage will keep it from being overpowered.
Starting at 6th level, when you deal damage to a creature, you can deal extra thunder or lightning damage (your choice) equal to half your warlock level. Once you use this feature, you can’t use it again until you finish a short or long rest.
This one might be underpowered, but I can't tell.
At 10th level, you gain resistance to thunder and lightning damage. In addition, you take no damage from falling.
This one seems fine, but I can't really tell.
Starting at 14th level, you have a flying speed of 60 feet, and attacks against you involving arrows and other similar projectiles (i.e. not boulders thrown by a giant) are made at disadvantage while you are flying.
I'm pretty sure this is good but, again, can't tell.
Is this warlock subclass balanced in comparison to the other official warlock subclasses?