Prohibit

Instant, 1U (2)
Kicker {2} (You may pay an additional {2} as you cast this spell.)
Counter target spell if its converted mana cost is 2 or less. If Prohibit was kicked, counter that spell if its converted mana cost is 4 or less instead.¹
Illus. Adam Rex

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (1/6)	Invasion (Common)