Seto Kaiba was the most straightforward person in Domino
Moreover, Eevee can go berserk with Continuous Steps if you get multiple heads on flipping coins
Riddler is extra draw, which, as a grindy Control list, this deck wants more than most
This is especially relevant in Vintage, where it prevents Lurrus decks from recurring many of their fast mana sources
Whereas EB-01 was really just a smaller set, PRB-01 is a reprint set with a lot of special foils and alternate arts, great for collectors of the game and easily ignorable for people who just wish to play
You can simply use cards like Infectious Inquiry and Vraska's Fall to spread poison around and sit behind your massive creatures while proliferate cards like Vraska, Betrayal's Sting and Evolution Sage slowly kill your opponents