name: Quandrix, the Proof
printings: PSOS, SOS
text: Flying, trample
  Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)
  Instant and sorcery spells you cast from your hand have cascade.
type: Legendary Creature — Elder Dragon