best class for farming is spellhowler , with aura flash . The mobs loose ur target and u can kill every mob around u with this skill, but now i have testet in new chronicles the skill and i have an higher reuse Time for this skill , dunno why .
warlord is an good farmer too and it makes fun to play with him
other question , which mage do not heal beeing attacked from this mob :P . anyway, its really faster i did make it everytime with heal and i become it very fast .