为 非瑞克西亚索命兽 寻找最佳的标准套牌，包括其胜率、热度，以及该牌在万智牌：竞技场中的合法赛制！
Menace
Whenever Phyrexian Harvester is dealt damage, seek that many nonland cards. At the beginning of your next end step, discard those cards.
