Acheron's Crypt

Acheron's Crypt enters the battlefield tapped. Surveil 1.
{t}: Add {b} or {r}
{t}{b/r}{b/r}: Sacrifice Acheron's Crypt: Search your library for any card and up to one basic land, put both onto the battlefield tapped, then shuffle. You take damage equal to the mana value of the chosen nonland card.