A very minor suggestion, but you might find your rotation more effective if you swap Psionic Vortex and Psionic Assault in your rotation, at least when you're clearing out trash. Pulling the enemies together first will make for a more effective hitbox when you follow with Psionic Assault and Psycho-Blast and help ensure that all enemies are affected by Vulnerability and Weakness.
implant and tome of oshtur boost my attack by a lot almost as much as I80 legs and the mental focus headband and cargill's restore my barrier giving me more TTL as well as more dmg
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