Champion Idea: Hippo-Crit

Hello, I have never done one of these before, so any ideas that will help improve the concepts would be cool. If you don't like it please give me a reason, and not just a down vote. Thank you for reading!

Maddox, the Hippo is a Juggernaut that deals and steals crit damage.

Passive: Thick Hide: After being Critically hit, Hippo returns 20% of all incoming damage(before resists) to attackers for 5 seconds. Also, while this passive is active, Hippo can not be critically hit.

Q: Hunger: Hippo hits is target dealing physical damage, and healing for 5% of his max health.

W: Beasts Rage: Passive: Hippo gains 1% attack speed for every 50 bonus health. Active: Hippo loses his bonus attack speed to deal 10% of the targets missing health as physical damage.

E: Give and Take: Passive: Each hit on Hippo reduces enemies as by 5% for 3 seconds (stacking 4 times) Active: Stacks of Give and Take are removed to steal 3% move speed per stack.

R: Muddy Body Slam: Hippo dashes a short distance and deals 5% of his current health as physical damage, steals 20% crit. chance from each for 5 seconds, and knocks up all enemies hit. (ex. If the enemy has 80% crit. chance, he would lose 16% leaving him with 64%. Hippo would gain 16% crit. chance. If 5 champions with 100% crit are hit, Hippo gains 100% crit)

Hippo is a Health Juggernaut that does damage based on his health and the Crit chance of the enemy. He would be a good counter to the ADC heavy meta we have now.

Build with Juggernaut Items and a thorn mail to be op.

Thank you for reading again!! please leave any suggestions and up-vote if you like it!

Edit: Changed name to Maddox, the hippo. New E