The spell seems very nice after the recent tunes, but the fact that you can
easily lose weapons used in it via death/banish/moving doesn't make much
sense.
I am sure there is a reason behind it working the way it does, but I think
would be a much needed quality of life improvement to have the weapons return
to you if you need to move etc.
That change would make this spell actually usable in party environment. I don't
think that would be overpowered and the damage it does could be tuned to match
this.
Sure you can catch the weapons manually at the moment, but that is not always
feasible in a hectic combat scenario.

-Wicksius