summon build is very chill to play, dont have go crazy on the hot keys just watching your ultron zealot army cutting ppl up with energy blade.
energy build is smooth, big fast nice looking cone attack with dot and some other cool stuff. most skill animation are from doom/iron man tho.
melee.... well melee is kinda meh. attack animation is boring and no energy blade.
over all i like him. nothing ground breaking but its a nice hero for sure.
edit: ok i played a little more, his ultimate got some real problems
1 i die so many time using his ultimate because it lock you in place for like 4 sec without dmg immune. this Ultimate will kill you!
2 30 sec cool down + physical dmg with his signature lock you in to physical dmg, and you kinda have to put it on the hot bar.
3 cant aim it and aoe is not big enough, first few hit your almost have to use it like a melee skill and with the problem from 1# it will kill you
also he need some spirit recovery and faster animations. but i still like him over all