Oath of the Storm

When you have mastered the arts of electricity, all will become clear. 

Oath Spells

You gain oath spells at the paladin levels listed.

Oath of the Storm Spells

Channel the Storm

You gain two new abilities:

Storm Sword- When attacking with a shortsword, longsword, greatsword, rapier or any other type of sword, you may add 2d8+ Cha modifier lightning damage to the attack, and costs an action to empower.

Storm Circle- Using a whole turn in combat, you call your oath to seek vengeance on your enemies. Lightning will fall down on all opponents within a 30ft. radius and deal 1d6 + Cha modifier to each opponent, to a maximum of 5.

Aura of Conducting

While you are conscious, friendly creatures (including you) within 10ft. have resistance to lightning damage, and you always have immunity to lightning damages.
At level 18, the range becomes 30 ft.

Purity of Body

You gain resistance to necrotic and radiant damages.

Holy Nimbus

At 20th level, as an action, you can emanate an aura of sunlight. For 1 minute, bright light shines from you in a 30-foot radius, and dim light shines 30 feet beyond that.

Whenever an enemy creature starts its turn in the bright light, the creature takes 1d10+Cha modifier radiant damage.

In addition, for the duration, you have advantage on saving throws against spells cast by fiends or undead.

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