Swordsman Champion Idea

I recently joined a Belegarth (foam sword fighting) club at my school, and after I finished my sword, I had this idea for a champion. I might update if I get more ideas.

Passive: Excessively Large Sword/Heavy Hits Excessively Large Sword: The champion's weapon is broken down into several equally-sized pieces. Each piece gives +5% damage and +50 AA range capping at 5 stacks. Loses all stacks when killed. (Over-powered, I know, but if Riot actually uses this they'll nerf it. These numbers are more or less a placeholder values.) Heavy Hits: after every 4 autos (counted on the champion, not the target), the next target is knocked back 100 units, +100 for each extra piece, starting at 50 units with no pieces. (50+100+100+100+100+100) Also attached to this passive is a bit of a limiter; after every ability a small cooldown is put on all abilities, not affecting the ability that was used. (1, 1.5 seconds at most)

Q: Lunge The champion lunges forward in a line, extending their blade 200 units past AA range while hitting all in the way. (Kind of like a Fiora Repolst and the Yasuo Stabby stabby thing combined.)

W: Swipe The champion strikes in an 180 degree arc in front of them, again, their blade passing 200 units past auto range. (Think Rengar swipe thing but no stabby stab at he end.)

E: Reflection The champion reflects the sun off of their blade and right into the eyes on an opponent, stunning them for a second or two. The next auto against them by the champion deals extra damage. (Essentially a ranged Leona stun.)

R: Bigger Blade Essentially another passive, but on the ultimate. Essentially, every 45 seconds or so you get another piece of your blade. This is the only way to get more pieces. (Think of Riven's sword + superglue, except not.)