, Pay 1 life, Sacrifice Graven Cavern: Search your library for a Swamp or Mountain card and put it onto the battlefield, then shuffle your library.
: Return Graven Cavern to its owner's hand.
, Pay 1 life, Sacrifice Graven Cavern: Search your library for a Swamp or Mountain card and put it onto the battlefield, then shuffle your library.: Return Graven Cavern to its owner's hand.
