Cool assassin champ idea

Claradon, The Whisper of Death V1.0. Brief: Claradon is a ranged assassin who is extremely good at picking enemies out one by one, his E and R abilities synergize extremely well together as a quick R -> E -> R Combo can get and enemy over terrain into your team to kill. Claradon has his E to escape with a lengthy Cooldown so use with care. He is a male who uses a one-handed crossbow to fire bolts and has blades around his torso for quick and easy damage. Haven’t come up with a lore for him yet but I wanted it to be something like this. After Xerath rose up to ascension the whole of Shurima was after him, Claradon was ordered by Darius to go spy on Xerath to knew what Noxus was dealing with. Claradon got caught and was soon corrupted by Xerath to fight for him... something like that.

Passive: Nothing yet, still trying to decide.

Ruthless Blade. Q: Claradon throws a knife as a skillshot hitting the first enemy it comes in contact with. This applies a mark that lasts for 3 seconds, while the mark is active Claradons next basic attack will cripple(2 seconds) and bleed(2.5 seconds) the marked enemy. Range: 850 Cost:0 Cooldown: 5.7 Physical Damage: 70 / 130 / 165 / 230 (+ 80% Bonus AD)

(No name yet) W: Passive: Claradon gains a flat amount of Attack speed. Attack Speed: 5 / 7 / 13 / 20% (Buff?) Active: For the next 4 seconds every third basic attack deals a percentage of the enemy’s maximum health. Physical Damage: 30 / 35 / 40 / 60 (+80% Total AD) + 3 / 4 / 6 / 7% of targets maximum health. Cooldown: 5

(No name yet) E: Claradon fires a skill shot bolt. When the bolt hits an enemy or reaches the end of its range, Claradon will teleport to the location the bolt stopped. Range: 800 Cooldown: 17 Magic Damage: 25 / 40 / 65 / 120 (+80% Total AP)

(No name yet) R: ( 1st use) Claradon fires a bolt with a chain attached to in. The chain lasts for 4.2 seconds, after 4.2 seconds if the target still has the chains and has not been reactivated they will be routed in place. Range: 750 Cooldown 100 / 75 / 65 Physical Damage: 180 / 250 / 300(+85% Total AD) Root: 2 seconds (2nd use) Claradon can reactivate his Ult to pull his chained enemy towards him and over terrain. (While chained the enemy must be in a 950 range area or the chain will break)

If someting is to OP or too weak please let me know :P