结界
每当一位对手使用咒语时,你可以展示你的牌库顶牌。 若你如此作,且所展示的牌之总法术力费用与该咒语相同,则反击之。
If an opponent casts half of a split card (for example, Hit), it won't be countered if you reveal that same split card. The mana value of a split card is determined by the combined mana cost of its two halves, but the mana value of Hit is determined using only that half's mana cost.