Champion concept

So I think It's about time we bring a poro into the game as a champion. Enter Sid The Poro Master. Passive: Tenacity: Poros are native to the freljord and have a built in immunity to cold. movement impairing effects are 25% less effective. Q: Charm: Sid dances affecting the surrounding area for 10 seconds slowing and taunting enemies towards him and dealing damage over time 10/20/30/40/50+ ability power every second. W: Active:Call of the poro: Sid calls to his brothers and sisters to aid him rooting enemy champions in a straight line causing 10/20/40/60/80 damage +attack damage. Passive: Sid gains an extra 10 mana and 10 attack damage for every champion kill or assist. max 50 mana for every level. E: Give me a cookie: Champions and large monsters (dragon and baron included) are marked with a cookie periodically and when attacked Sid consumes the cookie healing over time a percentage of missing health. 1/2/3/4/5%+ ability power. R: Survival: Sid can attach himself to a friend or foe becoming untargetable for 5 seconds. He gives an ally a movement speed boost for the duration as well as attack speed(10/15/20%) or slows and then stuns an enemy after 5 seconds dealing (200/250/300+ability power) damage