Anyone have any idea of the CR of the following remaining Tane:
Bonefather
Great Ulas, the Mountain That Walks
Hachan Ke, the Glory in the Blood
Kyrn, the Legion
Leviathan
Mohaba, the Moon Worm
Personally, since Ragadahn himself is hesitant to wake Leviathan from it's slumber, I'd venture to guess that Leviathan is CR 30.