Xyrdane, Scale of the North

Flying, Vigilance
Whenever Xyrdane attacks, exile target instant or sorcery card from your graveyard. You may cast
it until end of turn, and if you do, it goes into
exile as it resolves. If its CMC is 5 or more, it
costs {2} less.
{w}{u}{b}{r}{g}{t}: Each player discards all the cards
in their hand, then draws that many. Then you
draw two cards.