Deleted_Account_00
Now with all this if he also take a transformation skill after the evolution he will have all the op skills he needs to become the best assassin
Rex is totally going to become some amazing master of Yin based attributes, he has the assassinate skill, he has a Darkness attribute physique, he has this new evolution, he has the skill that lets him hide in shadows, he has his Yin qi. I would say he is going down the Yin and Yang path, but so far stuff related to Yang is almost non-existent and he has plenty of Yin related abilities.