The best combo I found that works for me is Death Knight melee tank -with
2-handed weapon of course, sharpened up to the max to deal insane damage....

And the Hero with his little bow, picking away at the enemies health enough that when the DK runs up to it, he kills it in one shot!

Plus, all the different arrow types make using a bow fun, especially the splitting arrows!

I never liked magic in games...so I rarely use it.