Champion Concept: Kapy - The Soul Bound.
Class : Assassin.
Friends :
(Marcus Du Couteau)
Rivals :
(Flame's brother) 
Abilities :
Passive :
Shared soul
If there's a Katarina in enemy or ally team, both Kapy and Katarina gain a perma. buff called "soul bound". Soul Bound shares the damage between the two, no matter if same team or not. When within 1500 range of each other Soul Bound becomes level 2 and both gain 25% increased AP/AD/Movement speed. (if in blind pick and theres' 2 katarina's both get shared damage from Kapy and both deal shared damage to him.) IF any member of the Du Couteau family is in the match (talon, cassiopea, katarina), they gain "loyal to the clan", buff. Not matter if teammate or enemy, both Kapy and the Du Couteau member withing 1000 range gain a boost to their AD/AP/Movement speed for 10% seconds. If none of the Du Couteau clan is present Kapy, gains "Solo survivor" buff, which gives him the ability to use blood magic every 5th hit. The hit becomes ranged and deals bonus magic damage 10-50 + (0.25% AP ration)
Q
Blood magic.
If Kapy takes damage, he bleed and part of he blood drops on everyone who attacked him. While a target is blood marked, Kapy throws (after clicking Q) blood soaked blades that automatically find their target withing 1000 range, dealing 75-250 + (0.10 AD ration and 0.15 AP ration) . CD 15-10 seconds cooldown.
W
Unmastered shunpo.
After the short period of time, training with Katarina. Kapy hasnt managed to master the shunpo style. But the basics are still there. On activation Kapy dodges incoming damage for 3 seconds, while casting automatically very small distance shunpo dodges. He is unable to hit during this period but he gains 10-50% movement speed and his next attack deals bonus 10-50 (+0.40 AP) true damage. CD 11-6 seconds
E
Dirty Fighter.
Kapy throws dirt at his enemies eyes. Making them blind for 2-4 seconds and dealing 10-50 + (0.10 AD ration and 0.15 AP ration) magical damage. CD 10-5 seconds
R
Blood of Confusion.
Kapy channels for 1.5 seconds after which he throws blood at his foes. He becomes instantly invisible. Everyone affected by the blood will see him or Katarina appearing around them on different locations. The chance for the original Kapy to appear is 1 out of 5 (level 1) 8 (level 2) never (level 3). After the effect ends, all infected targets take massive damage 250-750 + (0.25 AD ration and 0.40 AP ration). Targets are unable to drop under 10% HP, if already at 10% they get deep wounds, disabling healing effects on them for 15 seconds. All infected take 10% increased damage by ALL sources.
CD - 130/90/55
No art. As I cant draw and my friends don't want to draw for me. I don't hope for this to be an actual champion, just sharing the kit idea. The numbers aren't a must, they can be tweaked. The champion is melee with a weird play style. I MAY make concept for other of my unique chars in my fanfiction in the future. Enjoy.