Ness/Lucas P K Thunder esq character skill
Imagine a skill where you fire a skill shot...and if it hits you, it burst you in a direction. Enemies hit are critically damaged.
It could be programmed like 
Q... But if it hits you!!!
2 Comments
I think the easiest way I could see this working is sme sort of channeled ability...let the skill go about 1000 units or so, and follow your cursor. Make it able to turn full circle and hit yourself (propelling yourself a sizable distance and giving you your crit) or to hit an enemy directly for a smaller knockback and regular damage. Key weakness being your inability to move, key strength being a somewhat versatile tool capable of being used for jungle ganks or general lane bullying/farming from a safe distance.