The Bibliothecary

You have no maximum hand size. If an effect causes you to discard a card, discard it, but you may put it on top of your library instead of into your graveyard. {x}, {t}: Scry {x} or Fateseal {x}. Exert: Cast a non-creature, non-artifiact spell from your graveyard for its normal casting cost, then exile it.{flavor}“Death doesn’t stop my obligations to the Library...”{/fontsize-19}