To be honest I just wanted something around the shield itself to show that it protects a larger area around the character, like an aura, and then I was just playing around with different shapes for bursts and I liked the look of that 
I tired it with flat quads and you could clearly see it being very flat at some angles. Meanwhile this only uses 5 particles and it looks volumetric-ish so I’m happy with that haha
I’ll tag @atcolombini because they were curious about this as well.
So it’s just a simple mesh, top part of the sphere
The UV’s
I’m using this texture from Luos’ pack (again) scrolling it on V and scrolling voronoi for displacement (similar to the water from this post Rensei's Sketchbook - #4 by Rensei )
And then it’s just a simple single burst of 5 particles with random rotation
