Champion Concept (ADVISE NEEDED)

I was just thinking about champion ideas because that is the kind of person I am, and I came up with a really neat idea I think. I don't know anything about the champion other than abilities. Any advise would be great.

This champion would probably be one of the most mobile champions in the game, with serious skill required to do damage and use mobility properly.

Base stats: I don't know yet. Should be really squishy and also probably does not use mana.

Passive(innate): Whenever (name) successfully uses an ability, he/she sends a homing bolt of magic to the nearest enemy(prioritizing enemy champions).

Q: (name) dashes to target area. (name) is invisible while dashing, however if he/she hits any structure, wall, or enemy, (name) is stunned for 0.5 seconds. Holds 10 charges. Gains 1 charge every 5(or 10, depending on balance of ability) seconds. Gains 5 charges on kill or assist. (1 second cooldown)

W: (name) leaps to target area, then rolls forward. (? second cooldown) (can go over thin walls)

E: (name) charges his/her power causing his/her next passive hit to deal double damage. (? second cooldown)

R: When activated, passive reactivates itself on every successful hit. (? second cooldown)

All of these abilities are subject to change. This champion might be too similar to , having no cost for abilities sacrificing cc. But I would enjoy any advise on name, gender, lore, and balancing the abilities, as well as just general thoughts.