(Champion Concept)- Sting the shadow of Demacia

I've thought a lot about this champ and tell me if hes too op or not Passive: everytime you auto-attack a champion, creep or jungle monsters u leaves a needle on them Q: (skillshot based ability) throws a needle that damages the first target it hits (dealing physical damage) if the target is a champion that was marked by the passive it poisons him w: allows u to select a champion that was marked by passive and creates a link with that champ. If one of the two champs break the link by going out of range that champion is stunned (so basically if its u that goes out of range u get stunned and if its ur enemy he gets stunned) e: u imprison yourself in a coffin ur mouvement speed is reduced but ur armor and magic resist increase by a lot( u can still use ur abilities while in the coffin) r: its an ability that has three attacks (and u can only activate the first attack if the target has a mark from ur passive on him) First attack: throws a net that stuns the target if it lands on him directly and slows him if it misses by a little Second attack(only usable if u landed ur first attack on someone): Pulls the target in the air with strings Third attack(only usable if u landed the two first attacks): Slashes the enemy with the strings u used to lift him in the air and can one shot anyone no matter how much armor he has (basically a spell that legitimally one shots) Tell me if this champ is too op because I personnaly fill he is kind of op