Jaden, King of Games

: Each legendary creature card has Elemental Warrior offering. Jaden, King of Games can be your commander.
+2: Reveal cards from the top of your library until you reveal an Elemental Warrior card. Put that card into your hand, then shuffle the rest.
-10: You get an emblem with "Whenever a card is put into your graveyard from anywhere, you may shuffle target card into your library."