Galio Rework concept
The last champion concept (here )) I did kinda reminded me of Galio for some reason, and since Galio is one of my favorite champs, I thought I'd give this a try.
**
GAMEPLAY**
This iteration of Galio is a tanky artillery mage, reliant on his positioning, and is heavily rewarded for his enemies mistakes. He lies somewhere between Gnar, Vel' Koz, and of course, Live Galio. He would excel against champs like Jhin, Poppy, and Darius. He would struggle against champs like Vayne, Fizz, and Garen, who can easily dodge or negate his spells altogether. He would go well with champs like Yasuo, Braum, and Leona.
General Items to build:

PASSIVE: THE IDOL OF DURAND
Every third attack or ability against Galio heals him for a flat amount of health over time, and grants him temporary resistances. This can only happen once per champion every 10 seconds.
Q: RESOLUTE SMITE _(Skill shot, Nid Q, Xerath Q) _ ACTIVE: Galio fires a blast of light from his eyes in a target direction. If an enemy unit is hit they are smited, and light festers on them, slowing them before exploding after a few seconds dealing damage. If any other enemy units are caught in the explosion they are damaged and also smited. This can only bounce to a champion once every 10 seconds. However, hitting a recently smited champion with resoulte smite smites them again, regardless of the timer.
W: WINDS OF DEMACIA (Thick skill shot, Illaoi Q, Rumble R)
ACTIVE: Galio claps his wings together, sending out a thunderous gust of wind that damages and displaces all enemy units hit. Galio gains movement speed for each champion to hit.
**E: SENTINEL'S SORROW **(AoE explosion, Zac W)
PASSIVE: Galio stores all the damage he's taken in the past 5 seconds up to a cap.
ACTIVE: Galio releases the stored damage in an explosion around him, enemies caught in the explosion take a portion of the damage over time. If Galio has the maximum amount of damage stored, he taunts all enemy caught in the explosion.
R: TWILIGHT'S SCREAM _(Skill shot/AoE, Karma Q/R, Vel' Koz Q) _ PASSIVE: Galio gains ability power equal to 20% of his magic resist and armor.
ACTIVE: Galio sends out a powerful ball of energy in a target direction.
When the ball hits an enemy, or reaches it's target location, it begins to
expand, slowing and dealing damage overtime to all champions caught
in it. When the ball reaches it's maximum size, it damages, pulls all enemies still
trapped inside inward, and stuns them for a short duration.