Ha, I see what you did there... Anyway.
After casting Final Verse, there's a short period when you can't cast anything. Casting other powers back-to-back is fine, which is how the gap after Final Verse is so easy to notice.
I remember when I first started playing, there was this goofy bug in the interaction between Mirage and the Attica (with Thunderbolt). I had fun basically carpet-bombing the enemies...
EDIT: How do you post an image? All I can do is link to it.
https://gyazo.com/efeed8e62f5d8f898a222d7eedd9357b