Medicrux, the Darkin Shield

"A mysterious figure appearing during a losing battle, a gargantuan shield protruding from the mysterious man that came to their aid. The shield blocked catapults, siege ladders, dragon fire. The shield and the figure vanished as quickly as they had came, turning the tide of the battle by sheltering the failing forces."

Idea for a Darkin support considering there are 5 Darkin and we already have Aatrox as a top laner. Numbers are place-holders. He is designed to be an immobile wall that protects the ADC and focus all his efforts into helping them last so that his W can bring them back from the brink of death to continue fighting.

Passive: Blood pact Medicrux bonds to an allied champion every 5/4/3 minutes. Allies bonded with the Darkin shield will have 5% of their damage taken redirected to him and any source of healing applied to them is applied to Medicrux at 25/30/40% value. Range: 2000 "I will not die for your sake. But I long to see all things smeared with blood."

Q: Blood thirsty Medicrux growls and slows all enemies in a cone by 20/25/30/35/40% for 2 seconds, enemies slowed will receive a mark that takes 2 seconds to form and lasts for 5 seconds. Allied champions (including self) that attack the marked target are healed by 60/75/90/105/120 + (6% of your max HP) Can only be activated twice per person "Partake in the feast of bloody victory!"

W: Dying breath Medicrux imbues an ally (or self) with demonic energy that thrives as they near death. The target champion gains 20 +(6% of target's missing HP) damage for 2/2.25/2.5/3/3.25 seconds, at the end of the duration they are healed for 30% of the damage they deal (heal is doubled to 60% if they are below 25% HP) "Fight to your last breath!"

E: Intimidate Medicrux lunges a short distance (Think a little more than Rengar's Q dash distance) and slams his shield in a circle. Enemies hit take 75/100/125/150/175 + (6% of your current health) and are unable to basic attack for 1.5 seconds. If Medicrux disables 3 or more champions he receives 30% bonus armor and magic resistance. "You worms are nothing against me!"

R: Shield of malice Medicrux lets out a howling scream and after a 1.5 second delay he expands his shield into a massive wall that intercepts incoming projectiles and redirects the damage to Medicrux at 50/40/30% effectiveness for 3/3.5/4 seconds and is rooted for the duration. All enemies that try to pass through the shield will be feared for 1.5 seconds, enemies that have been feared cannot be feared by it again in the same duration. "Fear the unbreaking will of the Darkin."