Quote from Tiro of Meletis »Why is Growth Spiral banned?
Quote from ReapThaWhirlwind »Why not just like,
"As an additional cost to cast Blood Mox, sacrifice a creature and pay 1 life."
Quote from ReapThaWhirlwind »Who would really do something like that, which bogs down the game, and ruins the experience?
It would be bypassed by the typically gamer. Tournament's surely wouldn't allow it.