Champion idea: SPIDEREX
Calling it Spiderex is kinda stupid, but riot does never accept champion names, right?
Very short bio: vile spirit, thrown from the peak of Mount Targon. And a spider. And now bounty hunter/detective of Zaun. Extremely short bio.
Looks: Spider in a coat, more humanlike body, less humanlike head. Spider eyes are the source of ultimate cuteness.
Weapon: Every ADC has a unique weapon...more or less unique, so our spider friend gets Magnum. More like one, that Two-face had in Batman comics - large and long, but still a gun.
Magnum has 6 bullets. Then Spiderex has to replace ammo like jhin, graves and any other civilized beings.
ABILITIES: PASSIVE: Seek&Destroy. Spiderex exploits every chance to put down his prey, mercilessly and effective, with his magnum. Shot damage is amplified by 30% per every crowd control effect on the enemy champion. Q- Thread. Sets 2/4/6/8/10 threads max. The thread is visible every 4th second (I mean it kinda shines like real spider thread). Thread slows target by 30% for 3 seconds. The effect can stack indefinitely. Two threads can't be put on one another, but can cross each other. Brokes only on contact. Lasts unbroken infinitely. W- Sinner mercy. If thread was recently touched by minion, champion or anything hostile, Spiderex moves there with one second animation delay. W grants 20/25/30/35/40 movespeed and % attack speed for 7 seconds. W has no cooldown and can be used few times, bonus will stack then. E- Spiderpierce. Upon levelling up, every 6 bullet will give birth for mechanical zaunite spider. Critical strike gives birth to the two spiders, regardless of bullet number - basically, critical strike is replaced by this passive. Spider can be shot on terrain instead of champion. It shall wait then underground for W reactivation. W reactivates all spiders on map, making them seek champions aggressively within 2500 aoe. Spider stats 370 movespeed 300 hitpoints 20dmg+10%dmg+onhiteffects. Spider number 2/4/6/8/10 on map. R - Vile Network. Applies net with 10% slow and some vision obstruction over the area. Small/moderate/large area.
ALL IDEAS AND CONCEPTS HERE ARE DONATED TO RIOT GAMES