sparkly noise for texture
Use something like Simplex 3D (GPU) noise. Set the period to something quite low, so you get lots of noisiness. Animate the transform Z with absTime.seconds. Plug it into a FUNCTION node In the Function RGB, select Input ^ Exponent Increase Exponent The lower values should now just be black & the higher values now pinging. Use a Level node to tame the opacity & composite it on top of something