Exactly like what the title says. It's been a long time since I've flexed my writing muscles, and I'm looking to get back into the game; here's my proposition: throw out ideas for champions, and I'll flesh out their design. The more coherent and sensible the better, although it could be as simple as "make Link from The Legend of Zelda!" or whatever. I'll write about their gameplay in League of Legends, their appearance, a blurb of lore, and even try to make a Runeterra card for them! I do all the work; all you have to do is start the process :D
Oh and please give me time to work on it: I have a full-time job and a couple games I try to stay "current" with in terms of daily quests and stuff in my downtime. I want to make a quality product for you, so I can't really pump these out quickly.
To get us started, I'll show you an example of what I'm looking to do, a champion concept I came up with about five years ago:
Qorval, the Cosmic Emissary


Overview
Qorval is an AP Mage, generally played in the Middle lane. Demonstrating mastery of the entities and forces of the cosmos, the dark wizard seeks to overwhelm his opponents with large swaths of Area of Effect (AoE) damage, with an emphasis on multi-hit abilities. Qorval doesn't win with a surgical strike for singular, massive damage (like a Ziggs' ultimate), but rather a constant oppressive drain against the health of his enemies (a la Vel'koz's ultimate).
Attack Power - Low
Ability Power - High
Defense - Medium
Difficulty - Low
Appearance
As an armored battlemage, Qorval's appearance shares similarities with characters such as Golbez from Final Fantasy IV, and the Magic Emperor Ghaleon from Lunar: Silver Star Story. A mysterious entity with a deep voice, hidden behind dark armor with a horned helm, pauldrons, and a cape. Covered head-to-toe, Qorval's true appearance is unknown, and whether he is actually human or not is subject to debate.
Debut Skin - "Comet Catastrophe Qorval" His armor would have more gray and blue in it, and his abilities are given an icy, cold theme: "frozen" meteors (like a hailstorm), comets instead of asteroids, and his Supernova is blue (which would mean it's actually hotter, according to science, but it's more for aesthetic reasons :P).
Abilities
Passive - Cosmic Alignment
When an enemy champion is struck by more than one of Qorval's abilities simultaneously, both abilities have their cooldowns reduced by (1, 1.25, 1.5) seconds.
This is cumulative for each enemy struck during a combo: if Qorval were to hit three champions with his Meteor Shower and Black Hole together, both abilities would lose 3-4.5 seconds from their cooldowns. If Black Hole were to end, but these same enemies were then hit with a combination of the remaining Meteor Shower and Asteroid Belt, MS would reduce by another 3-4.5 seconds, and so would Asteroid Belt.
Q. Meteor Shower
After a brief moment, meteoroids rain from the sky, bombarding the selected area. Each meteoroid inflicts its damage individually (like the Gangplank ultimate of old), accumulating damage over time as an enemy is struck by multiple shots.
W. Asteroid Belt
Qorval surrounds himself with a ring of boulders, pummeling enemies who remain within the area of effect. The summoned belt moves with Qorval, continuing to damage those who stay too close (very similar to Aurelion Sol's comets, but more of them).
E. Black Hole
A singularity is created at a targeted location, pulling in foes who stray too near. Similar in function to Orianna's ultimate but not instant, Black Hole inflicts no damage, but contributes towards a combo in regards to Qorval's passive. The pulling effect is stronger on those closer to the singularity's middle.
For clarity, let me mention that the strength of BH's pull would be relative to the enemy's position. If you're outside the range but walk near it, it would start to pull you in: if you're paying attention and move away accordingly within time you should be fine (unless you're knocked into it). If you're within the Black Hole, but not at its center, you better have some kind of movement ability like Ghost, Flash, or Master Yi's ultimate, or you're going in. If you are at the center, it's essentially the equivalent of a root, although something like Flash would still be an acceptable means of escape. While technically inferior to an actual root/snare, this is intended as compensation for the strength of Qorval's damaging abilities.
R. Supernova
Qorval erupts in a point-blank AoE pyroball, that engulfs the area around him as it expands in size. Qorval cannot move during this ability, nor cast other abilities, but all enemies who remain inside the area are subject to incredible damage over time. Note that the Supernova cannot be stopped: if Qorval is silenced, knocked up/away, or killed, the spell continues uninhibited from its original location, regardless of what happens to Qorval. His "channeling" of the ability is to compensate for the (frankly) massive damage it would provide.
Strategy
Qorval is a master of sustained damage; given ample opportunity, the dark wizard will utilize his large area of influence to pummel the enemy team into submission. Combining his abilities together, the damage over time drains the enemy's health while simultaneously refreshing his cooldowns so he can continue the assault. However, with minimal crowd control potential of his own, Qorval must rely on allies to hold enemies in place to maximize his damage output, and to maintain his survival by keeping them at bay.
Outside of Meteor Shower, Qorval's spells are generally medium-to-close range, meaning that he must build at least somewhat toward durability to trade his damage effectively. And yet, if he can survive long enough, his passive will allow him to continuously rain damage on his opponents, overwhelming them if they cannot escape from Qorval's effective range. Pulling enemies together with Black Hole, Qorval can apply Meteor Shower upon them before moving closer for Asteroid Belt. This triple-combo can refresh a significant amount of his cooldowns, and even more-so if given the opportunity to blast them all with Supernova as well. With sufficient mana reserves, Qorval can recover his spells off cooldown and be ready for the next fight...assuming any enemies still live.
Lore Entry
"Planets are...fragile.
Life and death, disaster and triumph; countless stories play out on a rock no greater than a marble compared to the vast expanse of the outer void. A beacon of spirit alone in the night, a grain of sand hidden in the darkness. And yet for all their spectacle, these small blips hold no control over their actions, exert no will over their domain. So full of life, and yet so lifeless themselves.
Pitiful.
A meteor slams into a planet's surface: devastation spans an area immeasurable. The structures are shattered, the people but ashes on the wind. Civilization has fallen. But the skies maintain their garrison of such force to a degree without count; the loss of one of their numbers is meaningless when viewed relative to the celestial horde. What is a man's achievements against that level of awe-inspiring strength?
Insignificant.
I have witnessed entire worlds on fire. Planets broken in half. Stars blinking out of existence, their great brilliance consumed by another greater still. I have looked into an abyss, that which contained within such power that nothing has ever held hope in escaping from it.
My journey has spanned the stars, and it has brought me here. To this...fragile planet. You squabble to remain in control of your lives, but it means nothing to me; all of your "might" means nothing to me. In comparison to the cosmos - the unyielding darkness, the innumerable asteroids and planets, the magnificence of the stars themselves - you are but insects, eclipsed both in magnitude and authority. How would you fare against such power?
How would you fare against one who wielded such power for themselves?
...You will know soon."
Friends/Allies: None
Rivals/Enemies: Azir, Bard, Lissandra
Unknown to the civilizations of Runeterra, Qorval has threatened the planet before, but all knowledge of his existence has fallen out of written record. Lissandra and Azir may yet be aware of Qorval's power, having come from an age long since past. As a guardian spirit that has existed through the centuries, Bard would similarly be in opposition to Qorval, in protection of the planet and its people.
And that's the gist. I have other champion concepts I can post, as well, which I might do if I don't get any takers right away. Thanks for giving this all a read, and double-thanks if you do wish to participate in this project/activity with me :)