Nocturne Rework.
Nocturne is a champion that has not aged well in league of legends from a gameplay standpoint but is loved from a lore perspective so here is my idea of a true shadow assassin.
Passive:
Shadow step: if nocturne is unseen in the fog of war and he can see an enemy, he can then right click on them (500 units), bringing him right behind them and putting a stack of paranoia.
Paranoia: shadow step gives one stack and every AA also adds a stack. Once you reach 3 stacks your next AA will break them causing your opponent to be feared.
Q:
Exactly the same but maybe more move speed from the trail that is left behind.
W:
Active: Nocturne blocks the next incoming spell and grants a stack of paranoia to the opponent that had the spell blocked.
Passive: Every 5th AA Nocturne spins cleaving all enemies within 150 units and adding a stack of paranoia to them.
E: Shadow
Active: Nocturne becomes the shadow of an ally champion (500 units) for 5/6/7/8/9 seconds and during this time can active his passive (500 units).
R:
Exactly the same but when you press R the first time it adds a stack of Paranoia instantly. A second stack of Paranoia is added to the champion that is targeted by the ult.
This rework is meant to make him more of a assassin jgl that has to use vision and the fog to his advantage as if he is on vision he can be close to useless without his passive.