Massacre [Nemesis]

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Set Name:	Nemesis
Rarity, #:	Uncommon, 58
Card Type:	Sorcery
P / T:	N/A
Description:	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.
Flavor Text:	N/A