Overview and Usage
This is a really fun build for mobbing and for some (i.e non Graveward) bosses.
Main focus is to spam Reverberation and create a huge combo count as the more you use it, the more powerful it gets. Soulsap and Samsara will keep you up and running as long as you're spamming and hitting.
Weapons: Anointed Siren gear specifically with 250% damage increase after using Phasecast is recommended since this is all about spamming Reverberation into a crowd and in case you miss the enemy, your weapon will punish them for avoiding death.
Shield: Recommended to use one Anointed with Action Skill Cooldown.
Grenade: Your Choice.
Class Mod: Phasezerker. I don't think this was ever a question.
Artifact: Any Artifact with Action Skill Cooldown or Elemental Projector.