New Support/Mage Champion

So I have an idea for a support/control mage champion. Haven't really put a name to the champion but have come up with the abilities surrounding the idea. The concept I have is an electric/lightning champion that can engage or disengage a fight.

Passive- Walking around causes friction, after stacking to 100 like Passive on Yasuo causes the next basic attack to inflict 35 bonus magic damage (Scaling with Ability Power) and slow the enemy for 10% movement speed for 2 seconds.

Lightning Bolt/Q- Calls upon the skies to strike down on a designated area. After a 1.5 second delay, a bolt of lightning descends. Enemies standing around the center are dealt 70,95,120,145,170 damage (Scaling with Ability Power) and slowed by 35% decaying over 2 seconds. Enemies standing in the center are dealt 50% more damage and stunned for 1 second. Cooldowns per level: 13,12,11,10,9

Electric Fence/W- Summons a fence like Acceleration Gate on Jayce for 5 seconds that any enemy champion who passes through are stunned for .5 seconds, and are dealt 50,65,80,95,110 damage (Scaling with Ability Power). Friendly champions who pass through the fence gain 35% movement speed decaying over 2 seconds and gain 20% attack speed decaying over 2 seconds. Cooldowns per level: 16,15,14,13,12

Power Up/E- Targets a friendly champion (Can be cast on yourself) and grants them 35% attack speed decaying over 2 seconds but also gives the friendly champion 3 empowered auto attacks that deal bonus magic damage like E on Nami (Scaling with Ability Power) that cause a chain of lightning to bounce up to 5 enemies like R on Volibear Cooldowns per level: 15,14,13,12,11

Thunderstorm/R- Begins to summon a storm cloud and after a 1.5 second delay, the designated area is covered by a cloud that summons lightning bolts that strike the ground below it and deal 110/150/190 damage per second like R on Gangplank (Scaling with Ability Power). Each enemy standing within the clouds radius is slowed by 25% for 2 seconds and have a chance of being stunned for .5 seconds (Can only occur once per champion) Cooldowns per level: 110,90,70

Let me know what you think of this idea for a new champion! Please look at my other champion ideas and leave comments there too! Will keep trying my best to come up with new and creative ideas. Thank you!