Raze the Ruins

Search your library for any number of lands and put them into your graveyard, then shuffle your library. For each land put into your graveyard this way, target opponent may search their library for that many lands and put them into play tapped, then shuffle their library.
{4}{g}{r}, Exile Raze the Ruins from your graveyard: Return all land cards from your graveyard to the battlefield tapped.