Hey guys. Spent a few hours on Shader Forge with lots of experimentation and excitement. Finally achieved something close to what I wanted to make.
It's a fully 3D nuke explosion mushroom cloud with lots of adjustable sliders for stuff like speed, flame intensity, parallax depth, smoke transmission, alpha, seperate cloud layers and flame layers. There are some issues with the alpha masks right now but they are easily fixable with changing the mesh.
It only uses a single static mesh for the mushroom cloud and the animated texture offset is done inside SF using Time node. The gif is way too fast but you can try the exe to get the full effect. You can orbit around the nuke with the mouse.http://www.mediafire.com/download/v2pe7zd6r73i5it/NUKE+FULL.rar