Imperial Mountain Dew Taster
The intent of both Realms of Valor and Realms of Infamy was indeed to give readers a chance to sample the different authors and different types of stories available in the Forgotten Realms line. Not all the stories tied to other novels, but the books were intended to be showcases for many of the signature characters and settings.
Well that's fun
Artus and the Ring of Winter were always some of my favorite Realms Lore when I was growing up. I was excited to see him appear in Tomb of Annihilation!