Ghathral, Monarch Inquisitive

You may look at the top card of your library at
any time, and you may cast it if it's a non
legendary, non land card.
If at any time the top card of your library is a
legendary card and/or a land, you may put it into
your graveyard.
You may discard a card at any time.
If you would draw a card and there are no cards
in your library, you win the game instead.
{t}: Scry X ,where X is the number of cards
in your graveyard.