You make no sense, the resistance down from shadow comet works for everyone. I have to use it against monsters with armored skin so they can be subject to endless mass, otherwise they'll resist. Dude has no business running at tier 8 in multiplayer with these numbers
Besides, the 55 000 dmg overall from shadow comet means that maybe 2 mobs got hit by the comets ... it got barely used
It's obvious just from the lack of damage source on the trickster that he's undergeared and/or doesn't know how to make a proper build. It's funny that he mentioned shadow comet when it's so low on the damage list.