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Scattering Stroke
Instant
Counter target spell. Clash with an opponent. If you win, at the beginning of your next main phase, you may add an amount of colorless mana equal to that spell's mana value. (Each clashing player reveals the top card of their library, then puts that card on their choice of the top or bottom. A player wins if their card had a greater mana value.)
Rulings (2)
You decide whether or not to add that much colorless mana as the delayed triggered ability resolves at the beginning of your next main phase. You don't decide before then.
Oct 1, 2007
You can't add just some of the mana. You either add all the mana or none of it.
Oct 1, 2007
Legality
Formats by platform
Commander
Competitive
Printings (2)
CMD#60$0.40
Commander 2011
LRW#82$0.30
Lorwyn