Мгновенное заклинание
Измените цель целевого заклинания с одиночной целью. Вы теряете число жизни, равное конвертированной мана-стоимости того заклинания.
You don't choose the new target for the spell until Imp's Mischief resolves. You must change the target if possible. However, you can't change the target to an illegal target. If there are no legal targets to choose from, the target isn't changed. It doesn't matter if the original target has somehow become illegal itself.