Caeliri

Storm Bringer: A mile wide storm is constantly around this creature, the embodiment of the storm's fury.

Spellcasting. The Caeliri is a 5th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 17, +9 to hit with spell attacks). The Caeliri has following Aeromancer spells prepared:
Cantrips (at will): Thaumaturgy, Lightning Lure, Shocking Grasp, Speak With the Wind

1st level (4 slots): Fog Cloud, Thunderwave, Zephyr Strike, Argol's Wrath

2nd level (3 slots): Mind Spike, Snilloc's Snowball Storm, Argol's Tongue

3rd level (2 slots): Lightning Bolt, Dissaperate Amongst Fluid

Call to the Storm: Calling to the storm, the Caeliri forces enemies in a 5ft radius to succeed on a dex save (15) or take 2d10 Lightning damage.

Thunderous Smash: Melee Unarmed Attack: +8 to hit, reach 15 ft., 1 target. Hit: (3d8 + 5) thunder damage. 

Claw the Air: Melee Unarmed Attack: +8 to hit, 10 ft cone in front of the Caeliri. Hit: 2d10 + 5) thunder damage.

Thunderous Rebuke: When hit by a weapon attack or melee attack, the Caeliri can spend its reaction to deal 1d10 lighting damage to the attacker and be pushed back 10ft if they are Large or smaller.