Spark the Lightning boy
So spark is a melee support champ he is very mobile and defensive champ. He helps his team by being able to engage with lightning rush and save his allies with charge which grants nearby allies movement speed.
His passive is lightning can strike the same place twice. Basicly every aa deals magic damage based on ap but can only affect a single target every few seconds similar to j4s martial cadence.
His q is lightning Rush it allows his to dash in a direction( skill shot) hurts targets that it passes through in an area around him
His w is can't stop the storm for a brief period he gains immunity to slow and an increase in tanacity. This lets him get into the middle of a team fight and still get off some ablities.
His e is charge up he does a small ale buff to himself and target allies granting an increase in movement speed. This allows him to be supportive and enables him to save nearby allies and himself.
Finally his r is e bomb after a brief channel (2-3 secs )spark lets off a massive explosion that knocks back everything near him including allies and enemy champs. This is a very powerful attack that's why it has a brief delay one because he has to power up and second because it allows counter play and let's people respond a bit before being blown away. I still think that with all of his other ablities this could be very rewarding.
Thanks for looking at my concept and I hope you have a good day :)