Wildheart

Nature literally flows through your veins giving you a deeper connection than even the Druids 

Natural Magic

Your connection to Nature allows you to learn spells from the Druid Class. When your Spellcasting feature lets you learn or replace a sorcerer cantrip or spell of 1st level or higher, you may choose a spell from the druid spell list or sorcerer spell list. You must obey all the restrictions for selecting the spell, and it becomes a sorcerer spell.

Your affinity for Nature also allows you to learn Druidcraft and Goodberry. It is a sorcerer spell for you and does not count towards against your number of sorcerer spells known. If you later replace these spells they must come from the druid spell table 

Natures Blessings

Nature feel your connection to it and seeks to help you. You are unhindered by natural difficult terrain. You have advantage on Animal Handling checks when interacting with Beasts. Your ties to nature gives you resistance to poison.

 

Natural Healing

Starting at 6th level, the healing power of Nature aids you in healing your allies. Whenever you roll dice to determine the number of hit points a spell restores you can add your Charisma to the total.

Guardian of Nature

At 14th level, you gain the ability to turn yourself into protective beast. If you don't have the spell Polymorph, it is added to your spell list and doesn't count towards your sorcerers spells known. You can cast it on yourself once for free once per Short Rest. 

Nature also tries to help you protect yourself by tough plant and fungal growth to covering you, you are constantly under the Barkskin Spell.

Genius Loci

Beginning at 18th level, you can become one with the Spirit of Nature. As an action you can spend 5 sorcery points to transform into a Elemental of your choice. You keep your Int, Wis, and Char. You also keep any Racial and Class features. You may also still cast spells in this form. You can only use this ability once per Long Rest.