Red Wizards of Thay

 Of all the cannon and homebrew factions in D&D, the only one specifically not allowed in Adventurers League is the Red Wizards. Despite that, I think it would be fun to play one that's going out into Faerûn to collect magic items of power to send back to the homeland and for overall espionage work. For adventures in and around Waterdeep, the Red Wizards are in Skullport (they're specifically banned from having a formal presence in Waterdeep itself) with both emissaries and intelligence gatherers. Here's the Red Wizards of Thay built out as a player faction if you're interested.