Contagion Clasp
Contagion Clasp {2}
Artifact
When Contagion Clasp enters the battlefield, put a -1/-1 counter on target creature.
{4}, {T}: Proliferate. (You choose any number of permanents and/or players with counters on them, then give each another counter of a kind already there.)
Latest set: [SOM] Scars of Mirrodin (U)