Shiv + Night Harvester synergy to require ability hit
I wonder how this changes certain kit interactions, like on Galio you have stuff like Colossal Smash doesn't proc Demonic Embrace burn and doesn't seem to actually count as a spell. Nerfing Night Harvester in this way feels like it hurts actual normal AP users without shiv, can't use Night Harvester anymore on other champs if you have no cooldowns or no mana, Night Harvester isn't really out of line in the game so nerfing it directly like this doesn't make sense to me.
Personally I think its time to drop the Shiv as a hybrid item idea, Kraken and Stormrazor were way healthier as hybrid items because they don't have waveclear built in, and the only champs you're preserving Shiv for at this point are Leblanc, Kai'sa, Varus, and Kayle. Just remove the AP ratio off shiv.
edit: I didn't look up Night Harvester champs last night when I made the comment but champs that will likely be affected by this change include: Elise, Nidalee, Rumble (overheat autos), Sylas (passive does not apply Demonic Embrace, will it still apply Night Harvester?), Ivern (W Autos).