Lance, The Half Demon/Angel

Lance was an angel that was close to Morgana before her fall and Kayle. One day leading an assault on a Demonic Outpost Lance and his squad were overrun and captured. Lance wasn't seen or heard from for years Morgana grew increasingly worried so much so that she chose to fall in search of Lance not realizing that in falling she would lose the emotional attachment that she had for him. After many years of torture and corruption Lance had finally been given an opportunity to escape his captors which he took immediately but his imprisonment and captors had taken their toll on him leaving him corrupted half of him was charred and Demonic while the other half remained pure and angelic, fearful of what the actions of the high heavens may be Lance chose to remain in seclusion until the day he learned of morgana's fate, feeling as if he was to blame for her fall from grace he sought her out tracing her to runeterra were he discovered that she was a champion of the league of legends, he had decided to join in hopes of maybe one day being able to restore morgana to her former glory. (Lore subject to change depending on what rito does to it.)

 Maybe have his abilities something like this and have him maybe like hybrid champ like nid or jayce (make him go from ranged-melee)
   P (justice): Deal bonus damage to the last champion that hits him (on aa or skill) cant hit same target for a few seconds
  Q (angelic flight): flies in an arc impaling and carrying enemy champions hit (could set up interesting wombos and ganks)
 W(sanctuary): creates a large area of healing for teammates increasing the heal the less percentage hp they have.
 E (heavenly spear): extends spear (kinda like a nid spear but its instant and isn't a projectile) doing damage in a line (make it somewhat easy to dodge like a short channel time)
R (fallen):Gives into the corruption and becomes a fallen angel losing his spear and growing claws and gaining new abilities. (toggle switch maybe like jayce and nid or maybe build up like gnar based off dmg or just like a timed thing were your in one stance for like 2 minutes then switch or something.)

Ult Q (Demonic crush): leaps into the air (similar to a short range and quicker panth ult) when landing stuns enemies in a small circle for a short time and dealing damage. Ult W (Battlefield): Deals damage to enemies in a circle (same size as sanctuary) increasing damage the lower the enemies hp % (similar to morgana's) Ult E (Demonic fist): slams fist into the ground cracking the surface dealing damage and slowing enemies in a line the closer they are the stronger the slow and damage.

I don't really know what kind of role this would best suit it's got a good amount of utility a good amount of damage and I feel like some interesting plays could be made with this kinda champion I love the idea of the good and evil corruption the middle ground between kayle and morgana and I feel a transformation champ would play that better than a non transform would.

         The idea for this champion came from Neamean I'm just reposting to try to get more people to see it (I came up with these abilities though)(Riot is more than welcome to change or tweak depending on how they see fit.)