Massacre (pt)
Sorcery (CMC 4)
If an opponent controls a Plains and you control a Swamp, you may cast this spell without paying its mana cost.
All creatures get -2/-2 until end of turn.
Decks with Massacre
[PLIST] The List #NEM-58 (U)
[NEM] Nemesis #58 (U)
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[TD0] Magic Online Theme Decks #A44 (U)
[SLD] Secret Lair Drop #9991 (R)