Shaders let you create cool effects like dissolve, energy shields.

There are a few ways to use them:

What I'd do is look at how some of the free shaders have been implemented. Then if you need to make one yourself, do it in Shader Graph. Its drag and drop feature is much faster to use and tweak than coding it out.

Here's another video using Shader Graph on how to make an energy shield. https://www.youtube.com/watch?v=NiOGWZXBg4Y

One possible drawback of Shader Graph is you can't document what it is that you are doing. In a way, the preview of each node is the documentation.

Here's a post which details how depths works. https://www.cyanilux.com/tutorials/depth/