The Vine

The Vine is a thieves guild based in Emenna that is notorious worldwide. They have tendrils in many major cities, though the heart is within the free cities of Namiza. Their largest operations are within Emenna, Matarva, Yersek (Kardath), and Rhylmera (Marasen). They occasionally work with both the ubiquitous spy network The Unseen Eye and occasionally the assassin's guild the Order of Living Shadows which has pull in both Yersek and Emenna. Sometimes this Triad can be at odds or team up against one another as well. 

Their symbol is a black ivy leaf. They are called The Vine because they grow and multiply and eventually smother every city they enter. They are extended networks that spread between cities and countries- they spread aggressively and are hard to cut back.