Instant, 1U (2)
Common
Counter target spell unless its controller pays {3}.
"The fatal flaw in every plan is the assumption that you know more than your enemy."
—Volrath
Illus. Christopher Rush
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Extended (Type 1.X)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern