[Omnimorph]

Charm only becomes usable with 200+cha, so buy cha gear. Charm's determining factor is MR, so make sure that whatever you're charming is always tashed.

Once you get that sorted, you should have a longer term pet. I haste my pet, make him dual wield if he can. I pull the mob i want to kill with tash, i root it, slow it and send in pet. I keep root on it throughout the whole fight so if charm breaks i only have one mob chasing me.

With a full duration charm i can usually have my pet kill 3 or 4 mobs with my nuking once, and then the pet will be low health in which case it's time to break charm and kill it. Med up and restart.

Choosing the right mobs to fight is another key. Preferably mobs that hit above their weights with lower hp.