撹乱する群れ (Disrupting Shoal) (ja)
Instant - Arcane (CMC 2)
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.
Decks with Disrupting Shoal
[UMA] Ultimate Masters #51 (R)
[BOK] Betrayers of Kamigawa #33 (R)
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