Outbreak 
Sorcery
$0.17 #30012 0.28 26.4 years
You may discard a Swamp card rather than pay this spell's mana cost.
Choose a creature type. All creatures of that type get -1/-1 until end of turn.
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Cards similar to Outbreak expected a card that isn't here?
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+1 more matching line
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$0.28↑#18355↑0.41↑26.4 years
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$0.27↑#12632↑0.44↑26.4 years
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Rouse74%
$0.11↓#264350.2327.0 years
"If you control a Swamp, you may pay 2 life rather than pay this spell's mana cost."
Snuff Out73%
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"If you control a Swamp, you may pay 4 life rather than pay this spell's mana cost."
Mutilate72%
$0.24↑#2395↑0.39↑24.7 years↓
"All creatures get -1/-1 until end of turn for each Swamp you control."
Planar Despair71%
$0.18↑#298710.2225.4 years
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Crippling Fear70%
$0.40↑#2065↑0.42↑5.7 years↓
"Choose a creature type. Creatures that aren't of the chosen type get -3/-3 until end of turn."