生物~人类/法术师
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当疯狂书吏进战场时,每位对手各将其牌库顶的三张牌置入其坟墓场。
躁狂~在每位对手的维持开始时,若你坟墓场中牌的类别有四种或更多,则该牌手将其牌库顶的三张牌置入其坟墓场。
Most triggered delirium abilities use an intervening "if" clause. There must be four or more card types among cards in your graveyard in order for these abilities to trigger, otherwise they never trigger at all. There's no way to have the ability trigger if there aren't enough card types, even if you intend to raise that number in response to the triggered ability. The number of card types is checked again as the trigger resolves, and if it has become too low somehow, the ability does nothing. If which card types are in your graveyard changes but the quantity of card types stays the same (or increases), then the delirium triggered ability will still resolve.