Nocturnes VGU
i think the only problem with Nocturne right now is his ultimate isn't keeping up with the modernization of League I think his entire rework could be made on his ultimate+his visuals.
Im going to assume we all know what Paranoia currently does. So im not going to mention its current workings.
What I think his ultimate should be reworked into: Shorter cooldown for starters. Nocturne presses R Nocturne disappears(picture the Thanos snap) from the screen, becoming untargetable and quite literally non-existent on the map. The screen goes dark for enemy champions(same as now). Nocturne selects a target. Nocturne emerges from within that target(Think Kayne ult)**DEALS ZERO DAMAGE. Target is Feared for 1.5seconds. Allowing Nocturne a guaranteed E, but still allowing time to flash counterplay him. For 7seconds, Nocturne is a un-targetable shadow figure within a blinding cloud(Think Graves smokebomb). Nocturne can still be hit by skill shots from targets outside of the cloud. The blinding cloud moves with Nocturne. Enemies within the blinding cloud can target Nocturne, but are blind to everything outside of the cloud. Kills/Assists provide a windowed re-cast time.
I think you could leave everything else the same as it is, and just change his ult to this, and he would be a much more useful and cohesive champion.
MAYBE add 600/800/1000 True damage to the emergence aspect of his ult, exclusively on targets that don't have a teammate within a absolutely massive radius, so that he keeps his current role of punishing players for being unforgivably out of position(A stupid, and unrealistic role at any rank above Gold5.) Prob a bad idea tho, would be overbearing in lower ranks.