The silver dragonborn fighter Diaries
At 20th level, your knowledge of magic items is unmatched, enabling you to mingle your soul with items linked for you. Now you can attune to 5, rather then four, magic items at any given time. Also, you get a +1 bonus to all saving throws for each magic merchandise that you are at present attuned to.Potentially most plausible to get a Warforged Can