I think Swain is the most confused champion in the league in regards to how his lore/looks/abilties work like.
When you read his lore you think "This guy is basically Hitler, he must have a lot of battlefield control or displacement abilities".
Then you look at his aesthetics and think "This guy is a bird mage, he does bird magic, it's also kinda evil, evil bird magic".
Then you -play- him and realize "This guy is a vampire, all about that lifesteal and sustain".
What do birds have to do with tatctical battlefield control OR vampirism?, his aesthetics don't fit his kit, and his kit doesn't fit his lore, and his aesthetics don't fit his lore either.