Play Boosters are reliable for variety, but if you want cosmic treatments, Collector Boosters are the smarter buy
Third Place Deaths Shadow Andrea Piemonti 13/13 for one mana
Its not that Umezawas Jitte just wins the game on its own, rather, its because it provides its player with constant boons
As is typical for powerful CIP effects, consider reusing it through recursion or "Vincent, Limit Break." 14 cards is quite a lot
Whether its Elspeth, Storm Slayer, Mondrak, Glory Dominus, or Ojer Tak, Deepest Foundation, this ability has never come cheap
Being an aristocrats deck, people will try to attack you to prevent you from going on one of your infamous long turns, so being able to blank a lethal attack is something more aristocrat players should consider