{B}, Sacrifice a creature: Scry 2.
{2}{R}, {T}: Exile the top card of your library. You may play that card this turn. When you exile a nonland card this way, Hidetsugu, Devouring Chaos deals damage equal to the exiled card's mana value to any target.
You must still pay all costs and follow all normal timing rules when playing a card this way. For example, you may play a land this way only during one of your own main phases while the stack is empty, and only if you haven't previously played a land this turn.