name=Massacre
image=https://magiccards.info/scans/en/ne/58.jpg
value=4.438
rarity=U
type=Sorcery
cost={2}{B}{B}
ability=Cast SN with AI only if an opponent controls a creature.
effect=All creatures get -2/-2 until end of turn.
timing=main
requires_groovy_code
oracle=If an opponent controls a Plains and you control a Swamp, you may cast Massacre without paying its mana cost.\nAll creatures get -2/-2 until end of turn.
