The Zahir is a gold coin you can never forget. It has been cursed by the Wizard, and it is possible to transfer the curse to another object or creature. The transfer can be done either the Wizard or by ritual. It has as a string attached to it in order for the creature to wear it on their neck, working as an amulet-like item. 

When using the Zahir, all creatures within a 50-foot radius must make a DC 15 Constitution saving throw, unless creatures are blind or have a blindness effect. On a failed save, the creature takes 1d6 Psychic damage. They must make a saving throw at the start of their turn. 

Notes: Damage: Psychic, Frightened, Combat, Deception, Cursed, Necklace