Sprout Swarm

Instant, 1G (2)
Convoke (Each creature you tap while casting this spell reduces its total cost by {1} or by one mana of that creature's color.)

Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.)

Put a 1/1 green Saproling creature token onto the battlefield.¹
Illus. Chippy

Gatherer Card Rulings [Nov 2009]

• 5/1/2007: Convoke reduces the total cost to cast Sprout Swarm. If you choose to pay the buyback cost, Sprout Swarm's total cost is {4}{G}, and convoke can be used to reduce any or all of that cost.

Format Legality	Legal in Vintage, Legacy, Extended, MTGO Classic Banned in Standard
Printings (1/9)	Future Sight (Common)