| doctor_wu |
I would read the requirments for nature warden agian as you need favored terrain which the only way to get right now is through ranger. The only real reason to take it is the DR pentreation on the animal companion. A striaght druid can get tihs on his summoned creatures with the summoning feats in sunlight summons, moonlight summons and starlight summons and other things from ultimate magic.
A high level striaght ranger with boon comapanion could take it but lose BAB.