On this one I went completely rogue from the concept xD. The original idea was to make an electrical barrier, but at this poin I already had an circular VFX (heal) so I decided on a different shape. But pretty soon in production I found that the offensive nature of the elecricity wasn't working with an defensive spell (atleast it wasn't working for my spell). So I decided to completely drop the barrier idea. And that's how the sparkle was born!!
(Feedback is welcome)
Sparks VFX