Fey Magic

Your innate magic comes from fey magic that was mingled with your blood or that of your ancestors. Most often, sorcerers with this origin trace their ancestry back to a lord or lady of the Plane of Faerie. Other fey sorcerers are descendants of warlocks who of made a pact with an archfey. The rarest of these sorcerers are those who travel to the Feywild and manage to absorb some of the plane’s natural magic by happenstance.

Modified from Xanathar's Lost Notes to Everything Else.

Level 1: Fey Magic

Your link to nature allows you to learn spells from the druid class. When your Spellcasting feature lets you learn or replace a sorcerer cantrip or a sorcerer spell of 1st level or higher, you can choose the new spell from the druid spell list or the sorcerer spell list. You must otherwise obey all restrictions for selecting the spell, and it becomes a sorcerer spell for you.

Level 1: Wild Knowledge

Starting at 1st level, you can speak, understand, and write Sylvan and gain proficiency in the Nature skill. In addition, your connection to the fey gives you a bonus to your Intelligence (Nature) checks. The bonus equals your Charisma modifier (minimum of +1).

Level 6: Nature's Armor

Starting at 6th level, you can use a bonus action to make thorny vines cover your skin. The vines last for 1 hour. While this feature is active, your AC can’t be less than 16, regardless of what kind of armor you wear, and creatures that attack you with melee attacks take piercing damage equal to half your sorcerer level (minimum 1). This damage counts as magical for the purpose of overcoming resistance and immunity to nonmagical damage.

You must finish a short or long rest before you can before you can use this feature again.

Level 14: Sylvan Embrace

Starting at 14th level, you can’t be charmed, frightened, or put to sleep by fey and you can speak, understand, and write Druidic. Additionally, when you cast a sorcerer spell of 1st level or higher, you can expend 1 sorcery point to make yourself and any equipment you possess invisible until the end of your next turn. This invisibility ends early if you attack or cast a spell.

Level 18: Untamed Champion

At 18th level, whenever you cast a cantrip or spell that deals one of the following damage types, you can change the damage to another type on the same list by spending a number of sorcery points equal to the spell’s level: acid, cold, fire, lightning, poison, or thunder. Changing the damage type of a cantrip costs 1 sorcery point.

Additionally, once per turn when you cast a spell of 1st level or higher you can teleport up to 30 feet to an unoccupied space that you can see.