Rancid Catacomb

Hideaway (This land enters the battlefield tapped. When it does, look at the top four cards of your library, exile one face down, then put the rest on the bottom of your library.)
{t}: Add {b}.
{3}{b}{b}, Pay 3 life: If a creature is attacking you, reveal a card exiled with a Dungeon you control.
If it's a black creature card, put it onto the battlefield. Otherwise, put it into your hand.