"Ah." Rex contemplated for a moment. "There is also the matter of our species - from what we know, the original Bearers were all ponies, and we have seen two pegasi, two earth ponies and one unicorn, as well as the Magi of Stars, who was supposed to be the most powerful unicorn who ever lived. Yet only two of our group are ponies, and Night Blade and Page Turner are of different tribes. And the rest of us are different species entirely." 