[Evia]

Try using just one dot + slow. And melee with pet. I wouldn't bother with the debuff.
I also always keep myself fully buffed but it's mostly so I have the timers for my pet. Get the jbb pieces for this so it doesn't eat at your mana....also keep haste up on you and pet for the meleeing. If mana is a huge issue just keep hp/sta/str/haste up.

Some higher hp mobs require both dots but usually you'll only need one. I'd also never nuke unless you need to burn something down quick (usually if it's pathing away but almost dead or if you get an add)