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Unnerving Assault
Instant
Creatures your opponents control get -1/-0 until end of turn if blue mana was spent to cast this spell, and creatures you control get +1/+0 until end of turn if red mana was spent to cast this spell. (Do both if blue mana red mana was spent.)
The scales of battle rarely balance.
Rulings (5)
The spell checks on resolution to see if any mana of the stated colors was spent to pay its cost. If so, it doesn't matter how much mana of that color was spent.
Aug 1, 2008
If the spell is copied, the copy will never have had mana of the stated color paid for it, no matter what colors were spent on the original spell.
Aug 1, 2008
If a creature changes controllers later in the turn, that won't change how Unnerving Assault affected it.
Aug 1, 2008
Legality
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