Elden Ring: Shadow of the Erdtree has introduced a spectacular array of new and amazing bosses for Tarnished to challenge. As you enter the shadow realm, the first remembrance boss for most Tarnished will be Rellana, Twin Moon Knight. As some lore enthusiasts might guess from her name and title, Rellana is a Carian princess like Ranni, who joined the side of Messmer the Impaler and now resides in the shadow realm of Elden Ring.