How about this suggestion ? I always wanted this type pet in game.
There would Legendary, Mythic and Arcane even heroic types pets like this, Im showing Arcane Type pet ''Night Blade'' .
http://www.part.lt/img/6e5080a4b3ec6...bf5a75c870.png
http://www.part.lt/img/e0570f389ccac...f36b45c203.png