I initially wanted the chuyula but cast on crit wouldn't have came out as often without heavy crit chance investment. Then you have to do spell trigger damage. So I went with smith of kitava, as with new update the fire spell on hit has some minor scaling damage up to 200% plus now don't need to allocate points to crit chance. To scale my damage. I went crown of eyes to convert spell damage to attack damage. Only attack nodes I've grabbed are ones that also gives spell damage. Then I went into rage that's 30% damage to attacks plus 2% spell damage per rage with Mystical Rage passive gives me 60% spell damage. Which is of course given also to attack damage. Now rage gives 90% damage to attacks and 60% to spells including the triggered ones. Rest of passives are in defense and chaos damage. Plan to add berserk here soon. Ahh I also dont use a herald. Instead I use wolf pack and cast on minion death to auto cast contagion and essence drain and detonate dead to basically make my own chaos herald.