合变

万智牌机制

当你支付合变费用施放生物咒语时，会有以下几点不同。首先，你将支付合变费用，而非其法术力费用。其次，你需为此咒语选择一个目标。具体一些说，选择目标由你拥有的非人类生物。我猜这是因为依克黎的人类为了生存已经竭尽全力，所以他们的细胞还没能准备好合变。只有当你施放咒语时，才可利用合变。如果一张具合变的生物牌以其他方式进战场，则它就只是进战场而已。

合变 Rules

A keyword that lets a creature card be cast as a mutating creature spell. See rule 702.140, “Mutate.”

702.140a: Mutate appears on some creature cards. It represents a static ability that functions while the spell with mutate is on the stack. “Mutate [cost]” means “You may pay [cost] rather than pay this spell’s mana cost. If you do, it becomes a mutating creature spell and targets a non-Human creature with the same owner as this spell.” Casting a spell using its mutate ability follows the rules for paying alternative costs (see 601.2b and 601.2f–h).
702.140b: As a mutating creature spell begins resolving, if its target is illegal, it ceases to be a mutating creature spell and continues resolving as a creature spell and will be put onto the battlefield under the control of the spell’s controller.
702.140c: As a mutating creature spell resolves, if its target is legal, it doesn’t enter the battlefield. Rather, it merges with the target creature and becomes one object represented by more than one card or token (see rule 729, “Merging with Permanents”). The spell’s controller chooses whether the spell is put on top of the creature or on the bottom. The resulting permanent is a mutated permanent.
702.140d: An ability that triggers whenever a creature mutates triggers when a spell merges with a creature as a result of a resolving mutating creature spell.
702.140e: A mutated permanent has all abilities of each card and token that represents it. Its other characteristics are derived from the topmost card or token.
702.140f: Any effect that refers to or modifies the mutating creature spell refers to or modifies the mutated permanent it merges with as it resolves.