Problem with the Nature spirit
Friend to Animals (Su): The shaman adds all of the
summon nature’s ally spells to her spell list. She must still
prepare these spells. All animals within 30 feet of the
shaman receive a bonus on all saving throws equal to her
Charisma modifier.
Druid already gives summon natures ally - so this 'hex' is basically just a save bonus for summoned creatures. So this basically seems like a useless hex as its written. maybe this could be the rewrite (or something like it) since its a very druid heavy already.
Friend to Animals (Su): Much like a druid, a Shaman with this hex can channel stored spell energy into summoning spells that she hasn't prepared ahead of time. She can “lose” a prepared spell in order to cast any summon nature's ally spell of the same level or lower. In addition, all animals within 30 feet of the shaman receive a bonus on all saving throws equal to her Charisma modifier.