When this artifact enters, put a -1/-1 counter on each creature target player controls.
{4}, {T}: Proliferate twice. (Choose any number of permanents and/or players, then give each another counter of each kind already there. Then do it again.)
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Contagion Engine [Outlaws of Thunder Junction: Breaking News]
Magic: The Gathering, Outlaws of Thunder Junction: Breaking News$22.490
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