T-Rex Champion Idea

Champ Idea: A Humongous T-Rex

Passive: Armor (maybe MR too) Scales off of HP regen per second, and if he loses HP regen (IE from Kat's Q) , the armor remains for a few seconds

Q: Active: Gains Movement speed and ignores unit collision (think alistar), deals damage to the enemies he steps on (maybe knocks them away?) leaving footprints that remain for a few seconds

W: Active: When Activated, He roars at the fools in a cone in front of him, CCing (stun? Suppress? what do u guys think works best?) and can't do anything while it's active (Max 3 seconds or somthing, can be cancelled. Also, maybe dealing a bit of damage)

E:Passive: On killing a unit, gains HP regen for a few seconds. Active: Rapidly regenerates health for a few seconds

R: Active: Grabs an enemy champ, suppressing them and swinging them back and forth in front of him. When released, or time runs out, he flings them in that direction. Deals damage. Also, deals bonus damage+stun if they hit terrain (think Vayne's ability)

Obviously, no Champion Name/Ability names have been added yet. I came up with this concept with some help from my bro's, and haven't added any numbers or whatever. (also, the thought of Warmog's on this guy struck me... >:D) I think he could fit in a variety of roles, especially jg, top lane, and support. Thoughts?