Target player mills three cards. Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)
原文A copy of a spell can be countered like any other spell, but it must be countered individually. Countering a spell with storm won't affect the copies.
原文The triggered ability that creates the copies can itself be countered by anything that can counter a triggered ability. If it is countered, no copies will be put onto the stack.