Circle of the Sea - Druid Subclass

This mod add the Circle of the Sea Druid subclass from the One D&D Playtest 6, adapted to work in Baldurs Gate 3.

This is my first mod and I don't really know what I'm doing so if there are issues you'll have to bear with me a little bit. If you do find any issues, please let me know. I made this mod mostly just so I could play an accurate version of one of my current D&D characters, and also partially just to see if I could.

Anyway, without further ado, here's the subclass:

Circle of the Sea

2nd Level: Wrath of the Sea

As a Bonus Action, you can expend a use of your Wild Shape to manifest a storm around you that lasts for 10 minutes. Once on each of your turns, you can choose another creature or an object you can see within 10 feet of yourself. The target must succeed on a Constitution saving throw against your Spell Save DC or take Thunder damage and be pushed up to 15 feet away from you. The Thunder damage dealt is a number of d6s equal to your proficiency bonus.

The playtest has changed druid to gain its subclass at 3rd level rather than 2nd. This obviously doesn't line up with BG3 so I've changed it so you gain this feature at 2nd level, when you gain the subclass. It also had the damage set to be a number of d6s equal to your wisdom modifier, but I don't know how to make that happen and so it uses your proficiency bonus instead. Included objects in the possible target. Finally, 10 minutes, being 100 rounds, felt like entirely too long to make sense within BG3 so I changed it to 10 rounds. If people would prefer, this can be reverted.

3rd Level: Circle Spells

You gain the cantrip 'Ray of Frost' as well as the spells 'Fog Cloud', 'Gust of Wind', 'Thunderwave', and 'Shatter'. These spells are always prepared.

5th Level: Circle Spells

You gain the spells ''Sleet Storm', and 'Lightning Bolt'. These spells are always prepared.

6th Level: Aquatic Affinity

Once per short rest you can cast the spell 'Create or Destroy Water' as a bonus action without using a spell slot. You also gain resistance to Cold damage.

In the playtest this ability gives you a swim speed and the spell Water Breathing. These aren't really a thing in BG3 but I didn't want to just remove feature at this level so i took the Cold resistance from 10th level's Stormborn and granted it to t