Talk:Counter/@comment-34817248-20190106091506/@comment-28173866-20190106095457

No, counter means, you can use the effect whenever you want (and as long as other requirements are fulfilled).

The chains go like this: P1 casts a spell, P2 counters it. Now, P1 can't counter the counter, but he can cast another spell, and so on. The counter of P2 is not necessary for P1 to cast another spell.