Tempest Domian

They use the  power of the storm to kill with the verosidy of the gods. They also can use heavy armor.

Bonus Proficiency

When you choose this domain at 1st level, you gain proficiency with heavy armor.

Wrath of the storm

at level 1 you can rebuke any attack when a creature is within 5 feet of you. Then you can make the enemy make a dexderity check then if they fail they take 2d8 lighting damge. Finally you can use this as maney times as you need equal to your Wisdom until a long rest is needed.

Channel Divinity: Destructive death

At level 2 you can use Channel Divinity to wield the power of the storm with unchecked power. Then you can roll lightning or thunder damage and can use this to do max damage no matter what.

Thunderbolt Strike

At level 6 when you deal lightning damage to large or smaller creature you can also push it up to 10ft away from you.

Divine Strike

At 8th level, you gain the ability to infuse your weapon strikes with divine energy. Once on each of your turns when you hit a creature with a weapon attack, you can cause the attack to deal an extra 1d8 radiant damage to the target. When you reach 14th level, the extra damage increases to 2d8.

Stormborn

At level 17 you have flying speed equal to your current walking speed whenever you are not underground or indoors.