Board Thread:News and Announcements/@comment-26364254-20150728201254/@comment-477926-20150806193854

Join the Ultra Rares tribe today! We're looking for more vocals and a chance to be the first 100% complete Tribal Island harmony! (10715115GN)

(Each Tribe can consist of a maximum of thirty monsters, which happens to be the exact number of "natural" monsters available to join it.)