神器
當傳染引擎進戰場時,在每個由目標玩家操控的生物上各放置一個-1/-1指示物。

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:增殖,然後再增殖。 (你選擇任意數量其上有指示物的永久物和/或玩家,然後在其上放置一個它已有之類別的指示物。 然後再作一次。)
If a permanent ever has both +1/+1 counters and -1/-1 counters on it at the same time, they're removed in pairs as a state-based action so that the permanent has only one of those kinds of counters on it.