User blog comment:Poisonshark/Custom Champion: Win'Gul, the Otherworldly/@comment-7709681-20160409032440/@comment-3391671-20160409054959

Same as Primus, without giving an impression yet, a way to condense that first part of the innate:

From "Every time he hits an ability on an enemy champion, Win'Gul gains 1 Essence. (This does not work twice if the same ability hits one champion twice, and does not grant several Essence if the same ability hits different champions.)"

into "Win'Gul receives a stack of Essence whenever one of his abilities damages an enemy champion. Win'Gul can only gain 1 Essence per ability cast."