Champion: Dormeth,the silentkiller

So before i start telling you about my idea of this champ i want to make clear one thing:this champion idea is inspired by Nostale game and the specialist Assasin'.also my english is poor so im sorry.

Dormeth the silentkiller

dormeth is an assasin with uses daggers in his both hands to kill his oppoents slow and painfully,he wears a black suit and a hoodie.

PASSIVE: Every 10 second dormeth becomes invisible for 1 second gaining 50% extra movement speed,this cooldown is reduced by 1 second every time dormeth auto attacks a champion.

Q ABILITY: dormeth dashes forward(the distance and length is the same as tahm's Q ability)dealing damage and causing enemies to bleed for 3 second Each second the bleed deals 2% of their max hp as physical damage cooldown 8 sec although the cooldown is reduced by 1 sec for every enemy champions dormeth hits with this ability

W ABILITY: dormeth pulls an enemy champion right next to him silencing him Cooldown 16/15/13/12/11

E ABILITY: Doremth performs a backflip and gains a buff which lasts for 3 seconds,in this 3 seconds the next damaging ability or auto attack dormeth is attacked with doesnt deal actual damage to him, instead the damage he was dealt is gonna be stored as extra damage in his next damaging ability. Cooldown 20/18/16/14/10

R ABILITY:dormeth throws a bomb at his target location dealing damage and reducing enemy champions armor by 30/35/40/45/50% for 2 second