Crumbling Cloud Palace

{t}: Add {u} to your mana pool. If three or more cards were put into your graveyard this turn, instead add one mana of any type to your mana pool.
{2}{u}{t}, Sacrifice Crumbling Cloud Palace: Until end of turn all creatures with flying gain "{t} : Draw a card, discard a card, then put the top card of your library into your graveyard."
Plunder at your own peril.