Could Dark Harvest scale with AD/AP?
Even if it's something like 0.05 AD? I'm thinking about a champion like Jhin, who doesn't really have anything too special to use as a keystone.
Sure, everyone will use Comet. Lethal Tempo sounds great on him, too. But if Dark Harvest scaled with the AD he could utilise, it would actually be a really fun mechanic to run to your victims's corpses in order to deal a massive amount of damage to your next victim. He'd be like Draven 2.0!