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.)
Near Mint - $1.00
Lightly Played - $0.90
Played - $0.70
Heavily Played - $0.60
Damaged - $0.50
Near Mint Non-English - $1.00
Lightly Played Non-English - $0.90
Played Non-English - $0.70
Heavily Played Non-English - $0.60
Damaged Non-English - $0.50