(: Add or to your mana pool.)
When Grass-Graveyard enters the battlefield, return a land you control to its owner's hand.
, , Sacrifice Grass-Graveyard: Target creature gets -2/-2 until end of turn.
: Add 
or 
to your mana pool.), , Sacrifice Grass-Graveyard: Target creature gets -2/-2 until end of turn.
