Nocturne rework ?

Hi ! Nocturne is a champion that I really like, that's why i'd like to show you my rework and hope something like this will come out one day :')

Passive - Umbra Blades : Every 10 seconds, Nocturne deals 110%/120%/130%/140% of his ad damage on surrounding ennemies and heals himself. The passive level up at level 6 / 11 / 16. Auto attacks don't reduce cooldown passive anymore but the cooldown reduction of Nocturne affect his passive cooldown.

Q - Duskbringer : No change on this one, I think it's not bad.

W - Shroud of Darkness : **Passive - Darkness Aura : ** For each kills or assists of Nocturne, he gains a damage bonus of 0.5%. No maximum %. **Active - Dark Protection : ** Nocturne shields himself with a dark barrier for 1.5 seconds, that's block the next ennemy ability. If the shield don't block an ability nocturne gains a dark cloud instead of his dark barrier for 2.5 seconds, dealing 10/15/20/25/30 (+0.35 AP) in area damage and gains 30 movement speed.

Cost: 100/90/80/70/60 Mana **Cooldown : **12 seconds all levels.

E - Agony : Nocturne deals **80/100/120/140/160 (+0.25 AD / AP) **as DoT damage during 3 seconds on a ennemy champion. When Nocturne use Agony, he gains a 5/10/15/20/25 ad damage on hit bonus for 5 seconds.

Cost: 80 Mana **Range: **550 **Cooldown : **14/13/12/11/10 seconds.

R - Paranoïa : Nocturne charges a target and stun it for 1.5/2/2.5 seconds dealing no damage but applying on hit effect. When Nocturne ult someone, the target is marked for 8 seconds. If the target died during the mark duration, Nocturne ult cooldown is reduced by 50%.

Cost: 100 Mana **Range: **2000/2750/3500 **Cooldown : **100 seconds all levels.

Don't hesitate to let your feedback about it, I hope you like it. Cya !