Path of the Storm

These barbarians can call on lightning BADASS

Level 3: Storm Aura

Starting at 3rd level, when rage is activated, a field of lightning emanates 10ft in every direction from your body. On a failed Dexterity saving throw, the target takes 1d6 damage.

Soul of the Storm

Starting at 6th level, you gain resistance to lightning damage, and you can breath underwater. You also gain a swimming speed of 30ft.

Shielding Storm

At 10th level, you learn to use your storm mastery to protect others as well as yourself. Each creature of your choice gains resistance to lightning damage, while they are in range of your storm aura.

Raging Storm

At 14th level, when you hit a creature while it's in your Storm Aura, you can use your reaction to force that creature to make a Strength saving throw. On a failed save, the creature is knocked prone.