Name:Spell Blast
ManaCost:X U
Types:Instant
A:SP$ Counter | Cost$ X U | TargetType$ Spell | ValidTgts$ Card.cmcEQX | SpellDescription$ Counter target spell with mana value X. (For example, if that spell's mana cost is {3}{U}{U}, X is 5.)
SVar:X:Count$xPaid
Oracle:Counter target spell with mana value X. (For example, if that spell's mana cost is {3}{U}{U}, X is 5.)