>> I'd also add 1,2 Logans, as shocking transformation into this guy wielding two Khopeshes gives you 3 wounds without killing him and nice surprise char that can serve a while, Heroic is a problem, but i think the benefit of making Shocking a card that gives 3 wounds is worth trying, especialy as when he gets 4th wound Khopeshes return to deck and he goes to discard.
Khopesh of the Abyss is unique, controlling more than one unique card with the same title forces you to (either discard or sacrifice or destroy, cannot remember on the top of my head) the excess copies.
>> [i dont play that well, just theorycrafting, i wonder what makes those ideas not work that well]
The time it takes to setup such configurations while under pressure.
Beyond that, any targeted character removal, or untargeted character removal if the Khopesh-wielder is the only one out, will work. Lord Jeffery Farrington works like a charm, for instance.