My Imaginatopn Of My Own Champ

Ok....so it's my first time using boards and i would like to share my imagination on my own champ (no arts yet,bad at drawing,only abilities included).Ok so,the name gonna be Yami,The SoulWeaver. He's gonna be Fighter/Assasin maybe,well i don't know what he could be. Abilities:

Passive,Free The Soul:After killing Champions,he gained bonus armor and magic resist for 8 seconds,his abilities damage also increased.

Seal:Yami switch his weapon to an electrical katana that gave 10% attack speed and reducing the target's damage as the same amount as his given attack speed.(Q)

Soul's Dash:Dash to a targetted enemy,dealing damage.While the dash available,he gained bonus movement speed.(W)

Locked In Torment:Targetting an enemy.When choose the target,he'll channel the enmy for 1.5 seconds to stun the targetted enemy for 2 seconds.(E)

OverKill:When target an enemy,he'll be untargettable while dealing damage to enemy,the enemy that received damage will have it's armor reduced.The ability also damage nearby enemy.When more than 1 champion had received damage,the ability's damage will deal bonus damage but the armor reduce still remained the same.(R)

So guys,give a comment about this.Well,if you can't understand my explaination,his ultimate is like Fiora's Ultimate. His friends: (Because,he's freeing soul so maybe Lucian needs his help :P.If Vayne,he needs to kill the soul's holder if he needs to free the soul so,Vayne could use some help to kill darkness or whatever) Rivals: (He's rival with Thresh because duh,he capture souls and Yami free souls,they'll fight.Yami have bad feeling about that Karthus is capturing the dead's soul so he gonna fight Karthus so the souls won't be in Karthus's hands.)

Champion Select Quote:"No could be captured". Interactions:"hmmph,you keep the souls and i'll free it from you." "No matter what,i won't let you hold these souls,Thresh" (I'll add further interactions more when i had some idea :.) "Deathsinger,i will keep your hands off from the souls of death".

One more thing to be mention,he is ad,not ap. Comment and give your opinions.Sorry for bad english.