Counter target activated or triggered ability. If a permanent's ability is countered this way, activated abilities of that permanent can't be played this turn.
"He slimed me...I feel so funky."
—Dr. Peter Venkman
NM-Mint Foil - $13.20
Lightly Played Foil - $11.80
Moderately Played Foil - $10.50
Heavily Played Foil - $9.20
Damaged Foil - $6.60
NM-Mint Foil Non English - $13.20
Lightly Played Foil Non English - $11.80
Moderately Played Foil Non English - $10.50
Heavily Played Foil Non English - $9.20
Damaged Foil Non English - $6.60