Old Swain looked like an ugly green dude with a bird.
But in lane and late game, we only knew his bird, Beatrice.
Beatrice was his whole kit, because when it wasn't Beatrice zapping the living sh*t out of yordles; it was Beatrice and Swain fused together.
I don't know if it'll be a Black Swan Swain or something like that but, bring back Beatrice somehow.
Doesn't have to be lore based, doesn't have to change his kit or what not. But a skin where someone can relive the feeling of saying "Screw that bird" would make a lot of older players happy.