Mirror Champion Concept
I had an idea so here it is.
The Illusionist
A champion ability set concept based around mirrors. Passive - Every 10th auto, your next ability can be casted two times in a row, the 2nd cast will cost no mana.
Q - Splits into two reflections from a spot and shoots projectiles toward where you cursor is. Each projectile deals 70/80/90/110/130(30% AP) If you land both of the projectiles though, it does a bonus 30/40/50/80/110(+60% AP) magic damage. (Cooldowns - 7/6/5/4.5/4)
W - Uses a mirror to reflect a incoming enemy projectile, that incoming projectile is reflected into a white looking diamond that stuns the first champion to make contact with it for 1/1.2/1.3/1.4/1.5 seconds and deal 50/70/90/110/120(+40%) magic damage.
E - Reflect light into all directions dealing 100/110/120/130/170(+20% AP) magic damage, slowing enemies around you. If casted with an ally near you, you shield them for 40(+20%AP) for 5 seconds and increase their movement speed by 10%. (Cooldown - 8 seconds)
R - Upon using the active, you borrow power from your mirror. Upon borrowing the power from you mirror, your cooldowns have 40% less cooldown, all abilitys are increased in damage by 200%, and you have +30% movement speed. However, while in this state your resistances are halved and you take 1.3x more damage from enemies. Active - You click an enemy champion, throw yourself into a mirror onto them dealing 200/300/500(110% AP) and stealing (1/2/3)/5th of their current mana(If its not mana then you take their health instead and obtain it as mana).
tbh most of this is stupid but like hey its something to think about.