Firespout | Magic: The Gathering
Formats Firespout is Legal in
Official Oracle Text for Firespout
Official Rulings for Firespout
5/1/2008 : 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.
5/1/2008 : 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.