The Savagery power is fine. I just tossed out an idea.
Personally, I think that this class needs ranged options. If you've seen X-Men 3, the dude in the woods who can grow and fire spines from his arms was pretty sweet.
Something involving tapping into nature might be interesting too, duplicate specific Druid spells (like Entangle) through his in-touchness with Nature or whatever.
Maybe Polymorphing into a bear or something? I dunno. Just throwing ideas out at this point.