New skin set concept: Thunderstorm
I'm not that great of an artist, so I don't have any images, but imagine these:
Thunderstorm Shyvana - a zap with a lightning surge sound for twin fang, electric particles for burnout with lightning sound effects, a lightning bolt for flame breath with the debuff marker as either a storm cloud or a fountain of lightning (trying not to look like Kennen's passive), and dragons decent booming thunder upon transforming, and her burnout in Dragon form becomes a storm cloud electrifying the ground.
Thunderstorm Anivia - a thunder ball for flash frost that explodes lightning when detonated, crystalize becomes a wall of gems radiating with electricity or storm clouds, frostbite becomes a lightning bolt, and glacial storm becomes a lightning storm (that's a given) possibly with storm clouds around the outer edge or the entire thing could be a cloud zapping with lightning and a big boom of thunder when first activated.
Thunderstorm Quinn - sadly all I could think of right now is blinding assault zapping around what valor hits and tag team ending with a boom of thunder and lightning raining down. Possibly her aa's could be lightning bolts?
I'm trying to come up with 2 more for a full team, but let me know what you think. :)
Volibear maybe? He's just already a lightning bear, so maybe make him a black bear with other visuals? (most of his skins make him brown)