By readying an action, a mystic can counter a mystic effect as it is being created (or a spell as it is being cast). To do so, the mystic must first determine the exact sphere components of the effect with a successful Mysticraft check (or in the case of a spell, a Spellcraft check). The mystic may then counter the effect by spending an amount of Destruction equal to the effect’s mystic level (or for a spell, an amount of Destruction equal to twice the spell level).