为 Geometer's Arthropod 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！
Whenever you cast a spell with in its mana cost, look at the top X cards of your library. Put one of them into your hand and the rest on the bottom of your library in a random order.
