Swain bot has a very similar win/pick rate to Aurelion Sol mid in the 'elite' tiers, yet has dodged the nerf bat for the whole of Season 11 thus far : r/leagueoflegends
Swain vs Vex Build - LoLalytics Swain Support vs Vex Middle Build & Runes Guide
Swain Build for Support with Highest Winrate - LoL Runes, Items
BECOME IMMORTAL WITH THIS SUPER HEALING SWAIN BUILD (SEASON 11) - League of Legends - YouTube