Krath, Reaper of Dread

0: Krath, Reaper of Dread cannot lose loyalty counters until your next upkeep.
0: Reveal the bottom card of your library. You may cast that card this turn. If you do not, Exile it at your end step.
-3: Destroy target permanent an opponent controls. At the beginning of your end step, put that permanent into play under your control.