Final shader with niagara particles:
Performance:
Base pass shader: 288 instructions
Base pass vertex shader: 187 instructions
MaxSampler: 337 instructions
Textures samplers: 6/16
Shader graph break down:
Fresnel for outline effect.
Inverted Fresnel for center glow.
Motion4wayChaos with BumpOffset for animated texture with parallax.
2 texture samples with BumpOffset to add stars and noise.
Motion4WayChaos is a material function that animates the input texture in 4 different directions.