Ty for the reply again.

I mean maybe my english is not good enough to explain what I mean.
By diversity I mean not playing 4 same character at the same time on leveling.
So 4 locks 1 priest is not my option and strategy you linked with 4 voidwalkers attack different targets and then hellfire is not accessible.
And meleecleave not what I want aswell.

I want to play mages, but add a bit of diversity, so play 2 mages + priest + 2 something
by something I mean:
warrior + warlock + mage + mage + priest
or
warlock + warlock + mage + mage + priest
or
warrior + mage + mage + priest + priest

and I'm wondering if anyone found a good strategy to pull fast on that kind of group composition
to be clear, while leveling mages + priest, I was able to hit dungeon cap on leveling on every dungeon (maybe not including ZF)
just curious if it is possible on setup without 4 mages, I can't see how can I fast pull yet without 4 counterspells and that much dmg, that mages have.
mb I will found it out myself, but before start and make a decision about setup, I just wanted to ask some experienced guys with that setup, maybe they would be nice and share some strategies.

I'm sorry if that strategies already well written anywhere.