[3.4]Toxic Rain pathfinder, need advice/complement

it is the second league for me, and I am currently building toxic rain on pathfinder.
It has been great damage up to T16 map(only did hydra atm), yet to find out how to shaper/uber elder is.
I would like some advice on my gear and the tree as well. I totally believe it's a meta build.



passive tree


The miracle archer is kinda troll on the toxic rain, it sometimes kills mobs too fast, and prevent me from mana leechlol.
The point is that the miracle archer itself is already quite strong with the DoT, which allows me to just phase run and blink arrow through the delve.
delve depth:280