New Champion idea???

I had the idea a couple of days ago to create a new champion. In fact it is... surprise surprise, its a melee top laner. He is known as "Kai, The Reaper of Bilgewater" who's lore is that he was orphaned with his brother at a very young age however they had managed to survive in such a place as Bilgewater. However he is now seeking revenge for the death of his brother because they had owed some money.And ever since he has ruthlessly killed anyone who stood in his wake. He soon met and took inspiration from her and became a bounty hunter. Because he thought that if he is going to kill people, he might as well do it for some dough. Kai has black spiked hair with bright jade green eyes. His weapon of choice is a double handed scythe that he uses to hunt his victims.

• His Passive is called "Bounty Complete" (someone find a better name for this) is just like kindred's marks in which he can target a champion on the map and when killing the champion he gains an extra amount of gold for that kill.

• His Q "Ruthless Swing" will be a slam down skill shot, in which he will put the scythe over his head and slash straight down in a line in front of him, if the blade of the scythe hits his enemy champion, they will be marked (Which we will get into later)

• His W "Death Mist" has two effects. The first is a passive that makes you deal more damage if you are not seen by any champions (Which you can combo with your Q to deal more damage) and the active can only be cast on water. His W makes it to where he is shrouded in the fog of war and cannot be seen by enemy champions, while this is in effect he gains attack speed and movement speed until it wears off or he runs out of the fog, this also will work with his passive and if he hits anyone the passive will activate but the fog will disappear.

• His E "Fear the Reaper" is more or less like Fiddlestick's Q in which when he activates this the enemy champion runs away from his location.

• His R "Reapers Call" is a dash ultimate straight to the enemy champion when marked by his Q "Ruthless Swing". When he dashes to the enemy champion Kai has his Scythe behind him and anything in the line of attack will also take damage, and they also take a fixed amount of true damage and Kai will be about two steps in front of the enemy champion. This is good because if you land your Q and mark him you can use your R and then use your E to turn him around if he is trying to run under his turret. However you may also end up ulting under their turret and will end up dying in the process so watch out,

Notes: Now I am sorry if some people out there think this is broken and/or useless. I'm not a professional creator of champions after all or I'd be working for Riot's creative team. However I can say that I have pretty much layed a platform for you guys at Riot to create this. All you would have to do is tweak the abilities a bit (Whether or not it needs buffed or nerfed) and continue on with the lore as you so see fit. I want to thank everyone for reading this long and boring post and would love to hear what you guys think about it. So thank you for your time and have a great day!