Massacre {2}{B}{B}
Sorcery
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.
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Cards that do something similar expected a card that isn't here?
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Cho-Arrim Legate 98%
$0.22#27844
"If an opponent controls a Swamp and you control a Plains, you may cast this spell without paying its mana cost."
Refreshing Rain 86%
$0.22#27430
"If an opponent controls a Swamp and you control a Forest, you may cast this spell without paying its mana cost."
Deepwood Legate 84%
$0.16#23900
"If an opponent controls a Forest and you control a Swamp, you may cast this spell without paying its mana cost."
Kyren Legate 80%
$0.30#27488
"If an opponent controls a Plains and you control a Mountain, you may cast this spell without paying its mana cost."
Feast of Succession 98%
$0.26#14588
"All creatures get -4/-4 until end of turn. You become the monarch."
Golden Demise 96%
$0.25#17569
"All creatures get -2/-2 until end of turn. If you have the city's blessing, instead only creatures your opponents control get -2/-2 until end of turn."
Sandman's Quicksand 96%
$0.14#15170
"All creatures get -2/-2 until end of turn. If this spell's mayhem cost was paid, creatures your opponents control get -2/-2 until end of turn instead."