Inexonerus, The Iron-Cloaked Emperor is another champion concept made by me.
Inexonerus's cloak consists of interweaved blades held and powered by magic. It passively grants him 6 / 8 / 10 / 12 armor and magic penetration.
Additionally, Inexonerus’s abilities are based on his blade-cloak, (much like Orianna’s ball). After using an ability, the blade-cloak remains at destination for up to 5s before returning to Inexonerus. If the blades leave Inexonerus’s leash range, it immediately returns to him after walking away or after the last spell cast. While the cloak remains in the leash range, all of Inexonerus’s abilities can be activated. The blade-cloak does not grant vision. Leash Range: 900
COST: 60 mana
Active: Inexonerus fires his blade-cloak in a select direction, dealing magic damage as it passes through enemies. The distance it travels can be adjusted. (This ability functions much like Orianna's "Command: Attack")
Passive: Whenever Inexonerus's blade-cloak damages enemies, fragments of the blade-cloak are left embedded in them, marking them for 4 seconds. Whenever Inexonerus successfully delivers an autoattack to a marked enemy, the mark is consumed to deal an additional magic damage on-hit, and slows them for 2 seconds. The marks do not stack, but the duration of the marks can be refreshed.
Magic Damage: 30 / 45 / 60 / 75 / 90 (+ 25% AP)
Slow: 10 / 15 / 20 / 25 / 30%
COST: 100 / 125 / 150 mana
COOLDOWN: 110 / 100 / 90
Passive: Inexonerus passively gains a 4% / 6% / 8% movement speed bonus.
Active: Inexonerus’s cloak returns to him and splits into 4 separate blades. These blades can be positioned and fired individually within Inexonerus's leash range in a 10 second duration after activation. After a 0.6s delay, the blades fire, dealing magic damage as they pass through enemies. These blades have a brief internal cooldown of 0.20 seconds, and are vector skillshots (like Viktor's "Death Ray"). This ability can only apply 1 stack of "Splintered Edge" to a singular enemy champion.