[Champion Concept] Adam: The Shadow Blade

Lore: Adam grew up as a farmer in ionia, his parents always tried to lead him away from violence and fighting, but he had a warriors heart, and the soul of an adventurer. One night, Adam snuck out of his house and began to wander through the woods outside of his property. About a mile from his home he slipped and fell down the hill and into a ravine. As he tried to stand back up his leg crumbled under his weight, looking down at it he noticed that his leg was broke, then his adrenalin wore off and he noticed the pain, searching around he found an old slightly rusted piece of metal on the ground. It looked like it had been some sort of decoration piece with gold trim, using it as a crutch he began trying to find a way out of the ravine, after a few steps his world went black and he collapsed to the ground. When he awoke he felt different. His leg was no longer broken, and the old rusty piece of steel in his hand was no longer rusty, but a shiny black and gold katana sheath, grasping the handle and giving a slight tug, the blade slid from its holster and into the sunlight, its perfect mirror edge glimmered, he bent the blade toward himself to see his reflection, his hair was now a fire red color, and he wore a white mask that only covered his eyes, it had strange red markings on it. His attire had changed as well, he now sporting a black overcoat and pants instead of his normal farm clothes. Looking at the blade in his hands he felt something within it, a dark energy. When he returned home, he noticed something wasn't right, his parents were not out in the fields or gardens. sensing trouble he ran inside, only to find horror. His parents were murdered, on the wall he noticed, a crest drawn on the wall in his parents blood, the crest of The Order of Shadows, as well as a note on the table, that read: "The power in which you hold is not yours, return it or more will perish." Struck with grief and anguish, Adam vowed to avenge his parents, and he began his mission, to hunt all of those guilty for their deaths. To hunt the Order of Shadows.

Abilities:

Passive: Fury of the shadow -- Whenever Adam takes damage, a portion of that damage is held by his blade, causing his next basic attack or ability to deal bonus damage to the target. The blade holds 5% of all damage dealt within the last 6 seconds.

Q: Rolling Waves -- Adam strikes three times, the first is a spin attack all around him, dealing (X) damage, the second is a swipe in a cone slightly larger range than the first, dealing (X) damage and the third strike is a slice strait down, dealing damage in a line 200 units long out infront of him, dealing (X) damage and slow all targets hit by 30% for 1.5 seconds.

W: Shadow Remedy -- Adam uses the dark power within the blade to heal him for (X) health and gives him bonus magic damage on abilities for (X) seconds

E: Displacement -- Adam uses the power of shadow to blink behind target enemy champion or neutral monster, stabbing them in the back dealing (X) physical damage and rooting the target for 1.5 seconds.

(Activating this ability without a target will make adam dash 200 units in the direction of the cursor)

R: Final Judgement -- Adam unleashes the raw shadow power of the blade, consuming himself with it and enhancing his abilities for 7 seconds.

Fury of the Shadow -- increases the holding cap of the blade to 20% of all damage taken in the past 6 seconds.

Rolling Waves -- increased damage on all 3 strikes, the last one also deals (X) magic damage over 3 seconds.

Shadow Remedy -- instead of healing all at once, shadow remedy will heal adam over 5 seconds equal to (X)% of all damage he deals the damage buff is active.

Displacement -- After blinking, Adam will unleash a concussive blast of shadow energy in a large cone infront of him dealing (X) physical damage slowing all enemies hit by 50% for 2 seconds as well as silencing them for 0.5 seconds.

(If Adam ends final judgement before the 7 seconds, the cooldown is reduced by 25%)

I know its not complete but i wanted to be able to see what people thought, Any ideas or changes are welcomed!