[Champion Concept] Psychopomp - The Soul Guide

Ok, I do not have any art skills nor am I any good at spelling/grammar but I would still really like to share this champion idea with the community. Any input would be appreciated and yes I know some abilities might be broken and none have costs/CD so please feel free to help me.

Psychopomp is Greek for guide of souls and this is the basic idea behind this champion and he would look similar to a grim reaper or a ferryman (yes I know it similar to but its all I got :/ ) type of being but with a ethereal scythe.

Category: Fighter/Assassin Ability Cost: HP

Passive: Ferryman's Tax The first kill and every other kill after the first grant 1 stack of Tax. For every stack of Tax Psychopomp converts 4% of all damage dealt into true damage. (So in other-words if he did 100 AD/AP damage with an ability or AA, add one stack and he would do 96 AD/AP and 4 true)

Q: Death Row Dash forward pulling your blade beside you to the right and at the end slashing around you dealing 15,25,35,45,55 Physical damage (.6 AD scaling) and apply 2,3,4,6,8% (+1% per stack of Tax) max HP bleeding, units on Psychopomp's left side during the dash are unaffected.

W: Last Rights Small AOE root for .5 sec (+.25 sec per level) centered on Psychopomp, deals 10,15,20,25,35 damage (.3 AD scaling)

E: Ethereal Blade (PS. his base AA range is 175) Passive: +10,20,30,40,50 AA range and 5,7,9,12,15% lifesteal Active: Next 3 AA's do bonus +10,20,30,40,50 Magic damage (.25 AD scaling)

R: Doorway Into The Beyond (.75 sec cast time) (.25 sec after casting ability it executes) Psychopomp opens a door on the ground in-front of him (about 2 and 1/2 s by 3 and 1/2 s) all enemy champs in the doorway below 5,8,11% max HP (+1% per stack of Tax) are executed. (PS. Yes that means this ability will do ZERO damage otherwise)