If they made an anime series about it I would transform some cards Regardless of the groups 2 dragons in Fantasy, 2 fish in Ancient when there can be another dinosaur like Stegosaurus or Brontosaurus, also because a whale in Animals is a giant sea creature similar to Megalodons, a bat in Animals and a vampire in Occult, 2 wizards in Job, in Animals remove an arachnid and Artifacts that have to do with a sweatshirt an air conditioner that gives heat and cold Furthermore, some groups do not combine with others Both Fantasy and Cosmic combine with each other.. do with the other 8.. I said that a dragon would have to be changed so also the Xs alone