An amulate that provides the effect of the Mind Blank spell to the attuned user as long as they are attuned to it. https://roll20.net/compendium/dnd5e/Mind%20Blank#content
This item is posessed by Dean Melraz Champurrado, whose version takes the appearance of an exquisite wrist dial with an octarine gem inlaid in its center. On the backside of the face, there is an extremely elegant yet complex recursive abjurative ward inscribed with pure Residuum