Dream destroyer

If {w} was tapped for mana to cast Dream
destroyer you gain 10 life If {u} was tapped for
mana to cast Dream destroyer draw cards equal
to the amount of cards in your hand If {b} was
tapped for mana to cast Dream destroyer
target oppenent loses 10 life If {r} was tapped for
mana to cast Dream destroyer exile the top 5
cards of target players library If {g} was tapped
for mana to cast Dream destroyer Dream
destroyer gets +5/+5