Ugarr Stonefist (champion idea)

So I was thinking of a cool champ that would take tons of damage for teammates. So I got this idea, Ugarr Stonefist(the stone protector) would be a human but with a stone like arm. His body would be normal but his face would look older and kinda wrinkled/rocky.

• His passive(warden's purpose) would be when running towards an ally he would get a movement buff(this speed buff would increase if the ally was damaged)

• His Q(Stone's might) when an ally is injured, Ugarr can activate this ability to gain a shield based on the ally's health

• His W(boulder strength) would be a passive resilience towards enemy champs and he would gain magic resistance and armor depending if he was injured(more damage more resistance)

• His E(Stone grip) Ugarr grabs a targeted enemy and holds them. Neither Ugarr or the target can move.

• And his ult(Suppress wounds), he would take no damage from any source for some seconds but after the seconds he would receive the damage but reduced(scaling with ult rank, lvl 6 25% reduced damage, lvl 11 40% reduced damage, lvl 16 70% reduced damage).

Lore

Ugarr was part of an unknown tribe. He was shunned and made fun of because his arm was lame. The elders frowned on him and the warriors exiled, too young and weak to survive he feel into a dark despair. He couldn't remember what had happened but he was in a cave. In the middle of the cave was a fountain, the fountain had glowing water running through it. Floating above the water was a shard, a small mountain like object hovered. Ugarr walked towards this and walked into the water, he reached out his deformed hand which he had lost feeling in and also was missing some fingers and grabbed the object. The earth rumbled and the cave began to collapse, he fainted. When he awoke he was outside his village and heard the cries of his people. He eagerly rushed to help. Another tribe was attacking his village, he looked down at his new body, where is lame arm had been there was a stone arm and his skin was cracked. He fought off the raiders and saved his people. His tribe thanked him but did not know who he was, he left the village and stood on a mountain forever watching his home. "Be like a mountain, stand tall and still."