User blog comment:Xyclone010/Xyclone Ability Bank/@comment-12443575-20140725153928/@comment-7709681-20140725160429

If you see Mirror as a complicated ability to execute, the solution would be to grant the concept's kit a disable of shared vision, which currently we only have Graves' W and Nocturne's R; that way the opposing team wouldn't see when you catch one of their own to imitate it.

The problem would be how to stop or difficult the original champion's indications to its team about which one is the real one.