Elemental Lightning Bullets Build,HELP Improved!

Purifier, specializing on lightning. Although it has a decent defense and can tank well enough, i just need some tips on how to improved its defense more specially on Health Regen. And if you can point out some skill or item improvements, much welcomed.

Use Grim Tools :stuck_out_tongue:

And read this thread:) [] Budget Lightning DW Ranged Purifier you need much better OA and DA