Stormcaller

Like the gods they serve, many celestials have an affinity for different domains, and this affinity can pass on to their aasimar children in some cases. Those that feel comfort when staring into a monsoon are given a responsibility to bring the wrath of the storm upon those that anger the gods or defile their beliefs, and stormcallers do so with a fierce determination.

ability score increase: Your Constitution score increases by 1.

age:

Size: Medium

speed:

Languages:

parent race: Aasimar

race features:
Race Modifications
With your DM's permission, you can change the following aspects of the base aasimar race in the following ways;

You can replace your necrotic and radiant damage with either lightning damage, thunder damage, or both.
You can learn either the shocking grasp or lightning lure cantrip instead of light.
You can learn Primordial, instead of Celestial, as your additional langauge.

Soul of Storms
Starting at 3rd level, you can use your action to unleash the electric potential within yourself, causing your body to become wreathed in lightning and your hair to become dark and stormy. Your transformation lasts for 1 minute or until you end it as a bonus action. At the end of each of your turns, each creature within 5 feet of you takes lightning damage equal to your proficiency bonus. In addition, you gain a flying speed of 30 feet. For the duration of your transformation, a strong wind swirls around you, as described in the warding wind spell, in a 5-foot radius around you, although you aren't deafened by the wind. Once you use this trait, you can't use it again until you finish a long rest.