为 Mizzium Mortars 寻找最佳的先驱套牌，包括其胜率、热度，以及该牌在万智牌：竞技场中的合法赛制！
Mizzium Mortars deals 4 damage to target creature you don't control.
Overload (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")
