Mutated Centaurians are not normal looking. Sometimes being as little as being too small (The size of a house cat) or too large (The size of a 2 story house), or as much as their eyes popping out, having extra limbs, or their bones jutting in weird ways. Mutated Centaurians look very alien to normal Centaurians.
Cannot mutate the entire form to be unrecognizable as a centaurian, and must retain key aspects of their breed(s).