Elemental Origin

You can most likely trace your lineage back to a creature of elemental affinity, or perhaps you were born during a natural disaster pertaining to your affinity, maybe an elemental creature or god blessed you upon birth or your birht might align an ancient prophecy.

Elemental Affinity

At 1st level, you choose one elemental type from the following: Acid, Poison, Fire, Cold, Thunder or Lightning. All spells that deal damage of the chosen element deal extra damage equal to your Charisma modifier.

 

Elemental Control

At 6th level, you gain a +2 to both your ranged spell attacks and your spell saves for spells that are the element of your elemental affinity, this bonus does not stack with other bonuses to spell attacks and spell save from magic items. And spells using the element of your Elemental affinity ignores resistance for the purpose of damage calculations.

 

Elemental Armor

At 1st level, as long as you're not wearing armor and not benefiting from a shield, your AC is 10 + your charisma modifier. additionally  you gain resistance to the element you have an affinity for.

 

Elemental Protection

Starting at level 14, your elemental armor gains a bonus effect depending on which element you chose for your Elemental Affinity:

Elemental Immunity

Starting at 14th level you gain immunity to the element you have an affinity for. Also, you treat immunity as resistance, and resistance as nothing whenever you deal damage to a creature with a spell that matches your elemental affinity.

 

Elemental Superiority

Once you reach 18th level, you have advantage on all spell attack rolls that deal the elemental damage of your chosen affinity type, and others have disadvantage against your spell saving throws of your chosen affinity type casted by you.