User blog comment:KeithCornell/Champion Rework - Cho'Gath, the Terror of the Void/@comment-26815373-20150919212029/@comment-25228021-20150920180634

It doesn't really need to be seen by the opponents. I intended it to be either a bar attached under his mana bar or a buff icon displaying how much it is filled.

Yeah, this page was supposed to be a very minor rework and I didn't put quite as much thought in it as I would with an in-depth rework I just didn't have the ideas for yet.

I want to point that the fact that Feast is only usable to kill is to detract it from being a nuke that you could just randomly drop in teamfights. I don't really like Feast as an ultimate in general. As for his passive, I agree there isn't much different from Trundle's, but I think changing it for Trundle is just more coherent than changing it for Cho.