Champion Concept: Sha Des, The Shadow of the Gate

I wish Riot did more with the concept of Gatekeeper Galio, it basically eludes that somewhere in the world of Runeterra there's a gate to the underworld seen here: http://vignette4.wikia.nocookie.net/leagueoflegends/images/c/c9/Galio_GatekeeperSkin.jpg/revision/latest?cb=20120424040951 Anyways, this champion is Sha Des (Shaw Des) The Shadow of the Gate who seeks to reclaim lost souls to escort or drag them from the mortal world. I've left out any raw numbers because it's pointless and I just want to know if this kit sounds interesting.

Passive: http://vignette2.wikia.nocookie.net/wowwiki/images/3/30/Spell_deathknight_bloodplague.png/revision/latest?cb=20080822012535 Shade

Whenever Shades damages an enemy champion/large or epic monster with basic attacks, he will spawn a shade of his target next to him. While the shade persists 5% / 10% / 15% of the damage dealt to Shades is reflected onto the last victim of Shade in the past 2 seconds.

Q: {{summoner:17}} Call of the Gate

Shades summons the Gate of the Underworld behind him that lasts until destroyed by 4 auto attacks. While active, a ghostly wraith will spawn every 10 seconds and pursue the nearest enemy champion dealing a percentage of Shades total AP as physical damage. If the wraith is attacking a target with Shade applied to them they will also be slowed for a small amount.

W: Soul Well

Passive: While Shades is in-game all enemy champions start the match with 5 stacks of Soul. Upon killing or assists in the kill of an enemy champion, he will absorb 1 stack of Soul. For each stack of Soul Shades absorbs he gains 5 AP. Half of stacks are lost upon death.

Active: Shades uses the powers of the Souls he’s absorbed to cause a mighty explosion, dealing magic damage to all enemies within a moderate radius. For each stack of Soul on Shades when this ability is cast, all enemies within the radius are stunned for 0.1 seconds. All stacks are lost when this ability is cast.

E: http://vignette3.wikia.nocookie.net/wowwiki/images/6/6f/Spell_deathknight_unholypresence.png/revision/latest?cb=20080721151328 March of the Dead

Shades sends souls of the dead marching forward and knocking enemies aside as the move, but only once per ability cast. If Shades or his allies are within the march while its moving they will gain bonus movement speed.

R: Harvest of Shade

On the initial cast of this ability, Shades gains bonus movement and attack speed and his passive can be applied to multiple enemy champions. However, the damage mitigation part of the passive is disabled during this. Recasting this ability causes Shades to blink to and strike each enemy champion with Shade applied to them dealing magic damage. Any enemies killed by this effect grant Shades permanent bonus AP.