Creativity - 3/5 - FC Stealth isn't exactly a new concept, and base looks a lot like an existing FC unit. However I can see the effort and it is a new concept to CEO so that's worth points.
Theme - 4/5 - Interesting flavoring of FC Stealth, also the theme is pretty good regardless.
Execution - 4/5 - Very balanced and tuned, probably undercosted a bit but eh. Don't want to dock a point for something using moveset squares that can be a passive, as VoidMage just turns those squares into teleports