In the Tower, , Inventory Items, Wands, Pockets, Lighthouses and even the different skills mastered by Rankers and Regulars (e.g. Intelligence, Weapon Mastery) are all given ranks according to their level. Both Rank and Grade are used in this relation and bear the same meaning. We do not yet know by who or how these ranks are decided. But it is safe to assume that a Ranker's or a Regular's ranking will change as they gain strength and obtain more skills.