flavorText: Suddenly, all the haggling didn't seem so important.
name: Siege Wurm
originalText: Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
  Trample
printings: GRN, M15, PLST, RAV, RVR
text: Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
  Trample
type: Creature — Wurm