I've seen the Dervish's design-it's kinda t.rex-like, has a spiky tail ending in a sort of fin, it's tall, typical colors are black and gold (though you can actually color your dragon however you desire when it first hatches), and it's got this split, slender spike on its nose that resembles a demon's horns. :U It is really cool, and you don't need a membership to get a Dervish egg.