I was kinda looking at this as part of my inspiration.You can see the SRD about the shipter class by Pathfinder.
My suggestion is to use the name "Nagual".
Nagual - Wikipedia
en.wikipedia.org
My own idea to have got a different style is a mixture of vestige pact magic and incarnum soulmelds. How to explain it? The nagual summon a totem spirit, like the vestiges. The totem gives a list of special powers, practically monster traits (for example natural weapons as claws), and locking points of essence in chakras (body slots) this powers can be "upgraded", like the spells with metamagic feats. The goal is have powers to be chosen the gameplay has to be fast and simple, even naguals as nPCs controlled by the DM.
That's the problem I'm running into most.seems more like a druid subclass of some sort. Maybe with subclass abilities that lean into martial ranger themes?
The wild shape is ok, just needs to be altered a bit.Can you be specific about how the Druid doesn't apply?
Just refluff the healing spells as involving herbs, Conjure Animals RAW already summons spirits, not real animals, and it's up to the DM what philosophies druids believe in in their setting.But the rest of the class doesn't really fit. The druid is about plants and animals, the class I'm working on is more about medicine, spirits, and the connection between all things.