Incarnation of Nature

Sometimes nature is threatened, and there is no-one to answer the call.  In these times, the natural world itself can create its own defenders, Incarnations of the earth itself with a single driving goal.  Once that goal is completed, these incarnations are often left aimless and drifting, sometimes finding their way into adventuring parties in order to seek out enemies of nature to destroy.

Natural Magic

Your link to the natural world 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 the restrictions for selecting the spell, and it becomes a sorcerer spell for you.

In addition, you learn the druidcraft cantrip and choose which natural aspect created you. You learn an additional spell based on that aspect, as shown below. It is a sorcerer spell for you, but it doesn’t count against your number of sorcerer spells known.

Beasts

You learn the beast bond spell, but it doesn’t count against your number of sorcerer spells known.

Plants

You learn the goodberry spell, but it doesn’t count against your number of sorcerer spells known.

Weather

You learn the fog cloud spell, but it doesn’t count against your number of sorcerer spells known.

Alternate Form

Starting at 1st level, you have an alternate animal form.  When you obtain this feature, choose an animal of CR 1/4 or less that does not have a Flying or Swimming speed.  As an action,on your turn you may change into this creature as though you had used the druid ability "Wild Shape".  Once you use this feature, you can’t use it again until you finish a short or long rest.

When you gain a level in this class you may change your alternate form to a new creature with CR no higher than 1/4 of your level that does not have a Flying or Swimming speed.

When you reach level 6, your alternate form may be a creature with a Swimming speed.  When you reach level 12, your alternate form may be a creature with a Flying speed.

(Note. The "Subtle Spell" metamagic does NOT allow you to cast spells whilst transformed).

One with Nature

Starting at 6th level, the natural energy coursing through you grants you a closer tie to the land. You can communicate with plants and animals within 30 feet as per the "speak with animals" and "speak with plants" spells, with the alteration that this communication is telepathic.

Earthstride

Starting at 14th level, you can use a bonus action to sink into the earth. Until you surface, you have a burrow speed of 30 feet and Tremorsense 30 feet.  You can surface as a bonus action.  Burrowing using this feature leaves no trace of your passage.  You can only burrow through natural, unworked terrain.

Earthen Regeneration

At 18th level, you gain the ability to overcome grievous injuries. As a bonus action when you have fewer than half of your hit points remaining, you can regain a number of hit points equal to half your hit point maximum.

Once you use this feature, you can’t use it again until you finish a long rest.