Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.)
"It is technically an ooze, but its lifespan measures only seconds. In that short time, its appetite for magic is extraordinary."
—Simic research notes
Near Mint - $1.00
Lightly Played - $0.80
Moderately Played - $0.70
Heavily Played - $0.60
Damaged - $0.50
Near Mint Spanish - $1.00
Lightly Played Spanish - $0.80
Moderately Played Spanish - $0.70
Heavily Played Spanish - $0.60
Damaged Spanish - $0.50
Foil Prices
Near Mint Foil - $5.70
Lightly Played Foil - $4.60
Moderately Played Foil - $4.00
Heavily Played Foil - $3.50
Damaged Foil - $2.90
Near Mint Foil Spanish - $5.70
Lightly Played Foil Spanish - $4.60
Moderately Played Foil Spanish - $4.00
Heavily Played Foil Spanish - $3.50
Damaged Foil Spanish - $2.90