Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Plasma FX Free.
Plasma FX v1.0
Plasma FX is a collection of plasma effects using custom shaders.
The effects are easy to customize by adjusting the Particle System parameters and colors.
YouTube | WebGL | Demo Page | Support
Plasma Particle Shader
Compatible with Unity 5.1 up to new versions of Unity(2020+)
Support available for assistance if any problems should occur.