Champion concept : Thodon, Keeper of the isles

This is my first attempt at making a champion concept, im highly interested in Riots process for character creation/updates and would like feedback critiquing the champion as a whole. Any feedback would be appreciated, i hope you enjoy the concept, if people ask, I'll post his bio and full back story.

Name- (Thodon) Role-fighter/assassin Lane-top/mid/jungle Range-melee, mid range melee (scythe) Abilities:           Passive: (Thodon) gains stacks of soul every time he slays a minion, at 20/15/10 (scaling down with ultimate level) stacks his scythe becomes empowered, attacks for 8 seconds hit in a cone on every attack until sated. During this time,  (Thodon) may activate R- (touch of solace).           Q- Absolute Judgement -60/65/70/75/80 mana- (16/14/12/10/8 second cd) (physical state) swings scythe in front of himself, dealing damage on first champion hit for (80/100/120/140/160)(.60 ad) grabbing them and flinging them behind him (450 units) (Spirit state) swings scythe in front of himself, dealing damage on first champion hit for (80/100/120/140/160)(.30 ap) grabing them and pulling himself to them.           W- Wild hunt -40 mana- all ranks (8 second cd physical form/.1 second cd spirit form) (Physical state) dashes through enemy unit, dealing (20/40/60/80/100)(.30 ad) putting him a fixed distance behind the unit, if the target is killed, half Cooldown and adds an extra soul stack. (Spirit state) dashes through enemy minions, continuous dashes stack costing more mana (cap at 150 per dash) dealing increased damage (20/40/60/80/100+15 per dash stack)(.35 ap) based on current cost           E- Broken will -80 mana- all ranks (15 second cd after damage boost ends) (Both states) (Thodon) buries his scythe into the ground, channeling energy into it over 1.5 seconds, after the chanel (Thodon) gains (10/15/20) Ad for 8 seconds          R- Touch of solace -no cost- (no Cooldown) (Thodon) changes the state of his scythe after 20/15/10 (scaling with rank) stacks of souls are reached, changing his abilities to physical/spirit state respectively.