Foreboding Stronghold

({t}: Add {u} or {b} to your mana pool.)
Foreboding Stronghold enters the battlefield tapped.
When Foreboding Stronghold enters the battlefield, reveal the top card of your library. If
it's a land card, untap Foreboding Stronghold.
"I'd avoid this spot if I were you. It's called the 'Tower of Tears' for a reason, you know."