User blog comment:Mich, Michele & Kuhla/Future Units Preview/@comment-26821399-20160324053835/@comment-27518538-20160325070945

Infidelity has 50% more spark damage but 35% less Att, and since spark damage gives a larger increase then attack buffs, I would go for Infidelity

But even better to use on Omni Eze is Medblare which should be coming soon with the old men's trial