[Champion Idea, no name or title though]

Name: Not created Title: Not created

Passive: After every ability his next auto attack is ranged (ignores W) every ranged auto also marks the enemy. marked enemies take 2% more damage from all sources for 2 seconds

Q: Sumasaults in the direction of your cursor blocking damage but not any form of CC
Q (Second Cast): After first cast you have 1 second to cast again, graple to an enemy champion or a wall in a short range and knocking the enemy airborne while pushing them back a little. (if you grapple the wall it increases movement speed by 25% for 1 second). (scales with attack damage)

W: You aim a skill shot that applies poison scaling with magic damage for 5 seconds and your next 2 auto attacks attack twice as fast, if combined with passive the poison lasts 8 seconds instead of the usual 5. (Cannot mark enemies)

E: (Only can be used if passive is active) Throws blade with rope on the end at the enemy and slowing them by 35% for 1.5 seconds. (scales with attack damage) (can mark enemies, enemies that are marked with this ability are also revealed on the map for 2 seconds)
E (Second cast): Throws second blade (skill shot) if it hits the enemy that was marked the blade stuns them for 1 second and pulls them in 1/3 of the way towards you. (scales with attack damage)

R (Passive): Auto attacks now apply bleed scaling with attack damage. Every auto applies a stack increasing slightly in damage per stack for 6 stacks. Apon reaching the 6th stack the enemy takes greatly increased poison damage and are inflicted with grevious wounds. R (Active): Throws an explosive dagger blinding enemies hit for 2 seconds and dealing AOE damage. (adds 1 bleed stack on any enemies hit).

Lore: I have the time to think of one but It's not really me who should write it.

EDIT: I know it's a lot to take in but if you really read it and try to understand what it says it makes sense. :^)