Eldrad Ulthran

{t}: Look at the top X cards of your library where
X is the highest CMC among Instants or Elf
creatures that you've cast this turn, reveal one of
those cards and put it into your hand. If X is 5 or
greater, reveal two cards instead and put them
into your hand. Put the rest on the bottom of
your library in any order.
Partner with Yvraine, Daughter of Shades