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Disrupting Shoal

Card Name

Disrupting Shoal

Mana Cost

X

Type

Instant – Arcane

Rarity

Rare

rules Text

You may exile a blue card with mana value X from your hand rather than pay this spell's mana cost.Counter target spell if its mana value is X.

Legal Formats

Commander, Legacy, Modern, Vintage

Not Legal Formats

Alchemy, Brawl, Explorer, Historic, Pauper, Pioneer, Standard

Rulings

(2/1/2005)
Disrupting Shoal can target any spell, but does nothing unless that spell's mana value is X.
(12/7/2018)
If a card in your hand has
X
 in its mana cost, X is considered to be 0.
(12/7/2018)
If a spell has
X
 in its mana cost, include the value chosen for that X when determining the mana value of that spell, even if it was cast for an alternative cost and no mana was spent on X.