With should be a real great build, also with spearcaster.
With WotEP I played a shaman Priest of Berath / Corpse-Eater, self buff of Priest plus barb's buff and speed was nice, very good with lot of minions and you can use WotEP Run Through for single enemy.
I think it can be a good weapon also with a Rogue/Ranger (with Hunter's Fang or Best's Claw)/Monk and Priest/Paladin for self-buff, defense and heal. Also an Arcane Knight could be powerful, wiz self buff with paladin defense, interesting...
It's a shame, Wiz and Druid are funny classes to play