i took from the rovers faction the weapon. (its near old arkovia) The groble offhand you can get from those pine barrens little shaman type of smigols (haha i really dont know how to describe em but this race is listed if you search for groble). They are also in the East Marsh and just a couple of other places like in act 1 and some other areas but they drop this offhand. Be careful with components you can remove them as well instead of just destroying or selling. Gather all components and if you dont need the item just remove the component for later use.
Why this offhand? it gives you % weapon damage and one mechanic that is good to know is lifesteal, it only works with %weapon damage so having that on your eye of dreeg will allow you to steal more life of each attack, which is very nice for a caster to survive. Other than that i removed some skillls to become more focused. Dreegs evil eye is spamable now, just the energy might be a problem, i’d say put those ectoplasms first before you do anything. You can respec at spirit guides in the game. if you cant find any just go crucible and one of them can respec your skills.
you can use shadowstrike if you like to move quickly to a group(or not) there is also other movement skills that you can get in forgotten gods. You go in apply the buff lethal assault and start shooting em with dreeg. You have 2 heals pneumatic burst and dreegs blood. They are also buffs so they should be always up.