acrolith

0: Opal Acrolith becomes an enchantment.

0： 蛋白像成为结界。

Whenever one of your opponents successfully casts a creature spell, if Opal Acrolith is an enchantment, Opal Acrolith becomes a 2/4 creature that counts as a Guardian.

每当任一对手成功施放生咒语，若此时蛋白像为一结界，则蛋白像成为2/4，并视为守护者的生。