Urocraw, the seeker

flying, trample, indestructible, haste
when you cast Urocraw, the seeker you may add {w}{w}{u}{u}{b}{b}{r}{r}{g}{g} to your mana pool. if
you do, lose 10 life
whenever a player draws a card, you may pay 3
life. if you do, draw three cards
whenever you cast a spell, draw cards equal to
that cards mana value