[Champion Concept] Mundo Jr

Hey guys, this may be way to OP, but I am relying on you guys to help me revise him. I don't have the backstory yet, but that is in progress. Without further ado... here he is so far:

Mundo Jr – The little mundo

Base Stats:

Base Health: 550 (+ 75) Health Regeneration per 5: 5.0 (+ .75) Second Resource Bar: N.A. Attack Damage: 60 (+ 3) Attack Speed: 0.750 (+ 3%) Armor: 14 (+ 2) Magic Resist: 32.1 (+ 1.25) Range: 125 melee Movement Speed: 355 units

Passive: Frenzy: Mundo Jr can exceed the maximum limits on stats. (Stats such as AS and MS don't fall off or cap off)

Q: Jittery: CD: 25/30/35/40/45 seconds Cost: 1% maximum health per second for 10 seconds Range: self-cast Increase bonus AS and MS by 10%/20%/30%/40%/50%. The cool-down on this spell is decreased by 1, per attack made on an enemy or neutral unit

W: Slashy: CD: 60/60/60/60/60 Cost: 0 health Range: self-cast Passive: This spell does not grant any attack speed while on cool-down. Kills and assists reduce the remaining cool-down by 50%. Active: You gain 20%/40%/60%/80%/100% attack speed and 20%/40%/60%/80%/100% critical strike chance for 3 seconds.

E: Jumpy: CD: 6/5/4/3/2 Cost: 1% of remaining health. Range: 500/625/750/875/1000 units Mundo Jr jumps into the air and lands pushing back enemy units with 125 units. Increases bonus MS by 10%/20%/30%/40%/50% for 2 seconds.

R: Smashy: Passive: Increases all stat bonuses from items and friendly spells by 100%/200%/300%.

Feel free to leave comments and critisizm; they will be taken into account :D