结界
当知识祀炼进战场时,抓三张牌,然后弃一张牌。
当一个魔符在你的操控下进战场时,将知识祀炼移回其拥有者的手上。
Each Trial has an ability to return to your hand when a Cartouche enters the battlefield under your control. The Trial is returned to its owner's hand only if it's on the battlefield as the ability resolves.