Phyrexian Leviathan

Flying, islandwalk, trample
When you cast Phyrexian Leviathan, if life wasn't paid for {p/u} in its casting cost, draw seven cards. If you do, put your hand on top of your library in any order at the beginning of the next end step.
When you cast Phyrexian Leviathan, destroy target permanent for each time 2 life wasn't paid for {p/b} in its casting cost. If you do, for each permanent destroyed this way, discard 2 cards or lose 10 life.