Thunderous Might

Starting at 3rd level, when you deal lightning damage to a large or smaller creature, you can also push it up to 10 feet away from you.

Channel Divinity: Invoke Tempest

Starting at 6th level, you can use your channel divinity to imbue your attacks with the destructive force of storms. As bonus action, you deal an extra 2d8 lightning or thunder damage (your choice) the first time on a turn you hit another creature with an attack. This effect lasts for 1 minute or until you have dealt this extra damage a number of times equal to your Wisdom modifier.

Wrath of the Storms

Beginning at 10th level, you can thunderously rebuke attackers. When a creature within 5 feet of you that you can see hits you with an attack, you can use your reaction to cause the creature to make a Dexterity saving throw. The creature takes 1d8 + your cleric level lightning or thunder damage (your choice) on a failed saving throw, and half as much damage on a successful one.

Stormborn

At 14th level, you have a flying speed equal to your current walking speed. This speed is doubled whenever you are not underground or indoors, and you are immune to the effects of non-magical wind.