Level 1: Servant of the Storm
Level 6: Acolyte of the Storm
Level 14: Friend of the Storm
Level 18: Master of the Storm
Starting at 1st level, you know the Gust, Lightning Lure and Shocking Grasp cantrips.
Starting at 6th level, you gain the following benefits:
You no longer need to cast a spell to use your Tempestuous Magic feature.
As a bonus action, you can spend 2 sorcery points to cast the Fly spell without spell slots or components.
As an action, you can spend 2 sorcery points to cast the Call Lightning spell without spell slots or components.
And as a reaction, you can give disadvantage to any ranged weapon attack within 60 feet of you.
Starting at 14th level,
Your Heart of the Storm feature has a range of 30 feet.
As a bonus action, you can spend 1 sorcery point to activate your Heart of the Storm feature without needing to cast a spell. If you do, you deal the damage to up to a number of different targets equal to half your proficiency bonus rounded down.
As an action, you can spend 4 sorcery points to cast the Storm Sphere spell. If you do, you can spend extra sorcery points to cast it at a higher level, one level higher per extra sorcery point.
Starting at 18th level, you gain the following benefits:
Your Heart of the Storm feature has a range of 60 feet.
You can cast the Control Weather spell using 5 sorcery points.
As an action, you can spend 8 sorcery points to cast the Storm of Vengeance spell.