User blog comment:JuneReil123/Rito, the Clairvoyance... Rito/@comment-12049719-20140520020448/@comment-4022742-20140520145602

All of the spells you mentioned have a range limit of 600-700 units, and have a visual indicator on it to show when you are affected by it. The only other global is Teleport, which needs a ward/minion/tower and requires you to channel for a while. If you give CV no visual indicator that it's been used, there is no counter play to it.