The purpose of this should be to confuse the enemy. Why not change it from this below to the following? Fr: Whenever your opponent deploys a champion, an illusionary copy of that champion is spawned in your nearest deployment zone. To: Whenever your opponent deploys a champion, an illusionary copy of this champion is spawned in an adjacent space. This would make more sense.
Yeh, illusions don't really work as illusions right now; they're easily distinguished from normal champs, and die too easily to any aoe.