Sonmiu, The Dream Caster
A thought came to me when I was reading about Tenacity. Something about it reducing the duration of 'sleeps' made me think 'Wow, no one in this game has a 'Sleep' cc. Oh whoa, there's no dream based champion either.' STOP RIGHT THERE DON'T INTERRUPT. I know Nocturne is based on nightmares, but I think a dream champion would be fundamentally different from a nightmare champ, plus, none of Nocturnes abilities really reflect his nightmare theme.
Keep in mind I've no idea what a 'sleep' is, so I'm going to make it up. In my mind, a Sleep cc would be a stun that gets interrupted by taking damage. Sleep would also augment Sonmiu's abilities. I envision her as a slender bipedal female spirit-creature with dreamcatcher-like designs on her dual antlered head, hooves for feet, and furry arms with claws for hands. Her weapon would be a staff adorned with a dreamcatcher. Her autoattacks will be ranged. For her playstyle I imagine her to be a disruptive utility self healing mage, that brings cc, durability, and a bit of damage to the fight. Sporting a diverse build path, you can either play her as a solo laner or support, possibly even a jungler.
Passive- Feast of Dreams: Sonmiu's autoattacks and offensive spells against sleeping targets heal Sonmiu for 50%/75%/100% of the base damage dealt. Half effective for multiple targets stacks up to twice.
Q- The Dreamer's Mark: Passively, Sonmiu's autoattacks apply stacks of the Dreamer's Mark, upon reaching three stacks, any of Sonmiu's offensive abilities will trigger the mark and put the target to sleep (A stun that ends after 1.25/1.5/1.75/2/2.25 seconds or after the target takes 100/200/300/400/500 + .8 AP ratio damage) While target is asleep, Sonmiu cannot apply stacks of the Dreamer's Mark. Once awoken from sleep, all enemies gain 'Insomnia' and have immunity to stacks of the Dreamer's Mark for three seconds.
Active: A line skillshot that deals 75/125/175/225/275 + .6 AP damage and applies one stack of the Dreamer's Mark to the first target hit. If this spell is used to put a target to sleep, or used on a sleeping target, it deals an additional 25/50/75/100/125 + .2 AP damage and goes through the target instead of stopping.
W- Narcolepsy: Sonmiu puts herself to sleep for 1/1.25/1.5/1.75/2 seconds. While asleep, she gains 25/50/75/100/125 armor and magic resist and heals for 50% of all damage taken while asleep. The 50% of damage she heals is true damage healing, so whatever damage the enemy would do before accounting for armor and MR, that's what Sonmiu is healing for.
Any nearby enemy that is asleep while Sonmiu casts Narcolepsy will not be awoken by damage.
E- Net of Dreams: Sonmiu casts an aoe net of dreams on target location. All enemies caught inside take 100/150/200/250/300 +.5 damage over three seconds. Each tick of damage slows by 10% for 1 second. Damage from Net of Dreams can trigger the mark.
Enemy champions sleeping inside the Net of Dreams heal Sonmiu for up to 75/125/175/225/275 +.5 based on the duration the target remains asleep. Multiple targets heal for 50% less stacking up to two times.
R- Deep Sleep: Sonmiu channels for 1 second, after the channel all enemy champions afflicted with the Dreamer's Mark take 100/200/300 +.5 damage. The stacks are consumed and all those affected are put to sleep for 1.25/1.75/2.25 seconds based on how many stacks of the Dreamer's Mark they had on them. The damage from Deep Sleep can trigger the Mark. Enemies that were asleep during the activation of Deep Sleep cannot be awoken by damage, take an additional 100/200/300 +.2, and sleep for an additional .75 seconds.
Her total damage is 1300 + 2.0 AP at level 18.
I'll update this with lore as soon as I can tomorrow, as of right now it's late and I need to do a bit of dreaming of my own. As always, all damage numbers, ratios, and duration of cc can all be tweaked if it seems a bit overwhelming/underwhelming. Lemme know what you guys think!