Disrupting Shoal

Instant - Arcane, XUU (2)
You may exile a blue card with converted mana cost X from your hand rather than pay Disrupting Shoal's mana cost.
Counter target spell if its converted mana cost is X.¹
Illus. Scott M. Fischer

Gatherer Card Rulings [Nov 2009]

• 2/1/2005: Disrupting Shoal can target any spell, but does nothing unless that spell's converted mana cost is X.

Format Legality	Legal in Vintage, Legacy, Extended Banned in Standard
Printings (1/8)	Betrayers of Kamigawa (Rare)