LOL Twitch Champion Guide – League of Legends Twitch, The Plague Rat Items, Gameplay, Build Guide. So here it is the glorious remake of League of Legends Champion Twitch The Plague Rat. LoL development team is working really hard to provide a masterpiece this week. Twitch, The Plague Rat is going to be introduced in the upcoming patch. So fans don’t go anywhere and keep coming here to check the latest updates.