Journey to Minoria

Journey to Minoria enters the battlefield tapped.
{t}: Add {u} or {r} to your mana pool.
{2}{t}: Add {u}{u}, {u}{r} or {r}{r} to your mana pool.
Whenever you tap Journey to Minoria for mana, look at the top card of your library.
If it`s an instant spell, draw a card.