When Contagion Clasp enters the battlefield, put a -1/-1 counter on target creature. {4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
NM-Mint Foil - $4.60
Lightly Played Foil - $4.20
Moderately Played Foil - $3.70
Heavily Played Foil - $3.30
Damaged Foil - $2.30
NM-Mint Foil Non English - $4.60
Lightly Played Foil Non English - $4.20
Moderately Played Foil Non English - $3.70
Heavily Played Foil Non English - $3.30
Damaged Foil Non English - $2.30