The lightning strike from a Lit II weapon is pretty sweet - a clap of thunder and a huge lightning bolt. I have been using an alchemical weapon with the disintegration proc and haven't noticed any graphical tell that it goes off. The graphic from the disintegration spell - a green ray - is pretty lame and not suitable. Instead you should take the red giant finger from finger of death and redo it in green. Then throw in some cool sound to go with it.