为 弃械清理兵 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！
At the beginning of your upkeep, draft a card from this creature's spellbook, then exile it. Until end of turn, you may play that card.
Equip abilities you activate cost less to activate.
