Necklace of Ultimate Command

Wondrous item, rare (requires attunement)

While wearing this necklace, you have a charisma of 18 (unless your own is higher) and a +2 bonus to all saving throws against fear or charm effects. However, the necklace has a drawback: when worn, it induces a sense of megalomania. When you first attune to this item, and every hour thereafter that you wear it, you must succeed on a DC 16 Wisdom saving throw. Failing means that you believe that all others must bow to your will, and that none can stand against you. Because of this effect, the necklace of ultimate command was only employed in the direst of circumstances to rally despairing troops before important battles. The megalomania effect suffered by the wearer can only be removed by a wish spell, and then only if the necklace is first removed and never worn again.