Tempest Knight

You wield the power of storms. Utilizing Lightning, thunder, wind and rain, make your enemies falter before the true power of nature. 

Storm Sense

You have advantage on perception checks. You gain +10 feet of blindsight and +20 feet of dark vision on top of that you already have.

Storm Blessing

Your sorcery points are doubled. Any magic damage you deal is converted into lightning damage appropriately (Does not count against damage changing effects such as Metamagic - Transmuted Spell) . You can also expend one sorcery point to teleport to the point where a lightning attack hit, and you can expend one point to cause thunder damage to force a Dexterity save or anyone damaged pushed back 5 feet and knocked prone. 

Extra Atack

Starting at 6th level, when you take the attack action you can make an extra attack. 

Extra Attack

At 14th level, you gain the ability to make another attack.

Storm's Ramapage.

Beginning at 18th level, once per long rest you can expend 10 sorcery point to double your movement speed and actions for a minute. Additionally, you have advantage on damage rolls to deal lightning damage.