Oath of Nissa

When Oath of Nissa enters the battlefield, look at
the top three cards of your library. You may
reveal a creature, land, or planeswalker card from
among them and put it into your hand. Put the
rest on the bottom of your library in any order.
You may spend mana as though it were mana of
any color to cast planeswalker spells.
"Journey before destination, you bastard!"