New darkin champion design

So, I have this concept of a darkin king champ, a bruiser that wins every duel and can't be kitted. I still think is pretty overpowered but the concept is great. Darkin King

Passive (blood magic) : gain health and life steal and spell vamp with each kill or assist.(1.5 lifesteal and spell vamp and 30 health per level, 3 lifesteal +3 spellvamp+30 health per kill / assist)

Q(Lance of abolition) : empower your Lance, damaging the ground in a line, that creates a circle dmg(1st),conic damage (2nd) and orizontal line (3 Rd), at the tip of the ability. Enemies hit by all 3 get stunned for 1 sec and dragged towards him or pushed back(this amiblity gets healing from life steal, and spell vamp// 30-70 base damage per level +120% ad)

W(undying fury) :take 20% of your max health to gain damage for 5 sec(gain 30-45%ad) and 30 % of your damage done for the next 5 sec turn into health regen(health regen is scaling with lifesteal and health regen, expanding his healing//ex:15%lifesteal and 15% spellvamp adds (15+15)=30% more health regen)

E(Darkin leap) throws Lance at the enemy, dealing damage, (if u hit enemy) recast ability to teleport at target and your next basic attacks slows oponent by 30-45 % and deals 20-60 bonus magic damage. Or if u don't recast it, the Lance comes back, rooting enemies that get hit by it.(base damage 15+75 % of bonus damage)

R(Darkin King) : creates a war zone that surrounds him, steals health from enemies and also allies in that zone (enemies 15% over the 10 sec duration, allies 5%,it stops if allies are lower then 20% health). The health stacks in a bar, and at the end recast the ability to give lethal strike to one enemy, if the enemy dies, u heal for 100% of the damage dealt by that ability(ability scales with ad, lifesteal, spell vamp, and health gained from ult, and its true damage)