Can I have some context on the Nocturne buffs?
2.5 seconds at max rank is kinda ridiculous. Having a spell that keeps a target feared for that long is very unhealthy. You nerfed fiddlesticks for that exact reason. Now fiddlesticks has a fear that is point and click instant while Nocturne's is attached to a tether with a delay, but he still has plenty of tools to keep the tether from breaking. I don't really think he even needs a buff right now. If you really do want to buff him, then making his fear that long is not the way to go.