That can be good too but not from the start but later in an actual build. If you alternate with other abilities, like Ravenous Earth or Aegis or Guardian it’s better. Or if there was a spam Acid component skill but there’s not…
Here’s some good build with Focused Gaze DEE [1.2.1.5] Rotting Gaze: 4:00 Crucible Gladiator 150-170, SR 36, all Celestials Vitality Decay Conjurer + bonus build Dark One Conjurer for example
I made Poison Retal DEE + Aegis build once but then Dot Retal was mostly removed. I don’t miss it much, it doesn’t suit Retal well imo.