Oriana and Her Rogues

When Oriana and Her Rogues enters the battlefield, scry 1. Then exile Oriana and Her Rogues and reveal the top card of your library. Each permanent on the battlefield with lesser converted mana cost than the revealed card loses all types and abilities and becomes a colorless
land with "{t}: Add {u} to your mana pool."
She foretold that her beloved home of Atlantis would flood at dawn and disappear forever. Only a handful believed her.