Frost Queen's Claim [FIX]
I'm sure people have thought about this, but I haven't seen it posted anywhere.
Main problem with it (IMO): It doesn't have much counter-play and is extremely versatile.
Solution: Give the Ghosts ~2 hit-points, like wards? That way when you're alone and getting caught out, 2 may be too much for you to handle on your own, as there's 2 ghosts, but as a team you can fire 4 hits before the ghost catches up. It's great counter-play and you wouldn't have to reduce the items slow effectiveness or increase its' cost. It also gives the item a much more "real" feel to it, rather than a one-button win.
and
give plenty of CDR. In fact Athene's IMO gives better stats depending on who your lane opponent is. IE MR. I don't NEED to be able to catch my opponent with FQC. I NEED to be able to survive the burst they are capable of. The slow is useless if you can't capitalize.