Amulet of Takkisis

This elaborate pendant features five chromatic dragon heads, each a different color, surrounding a large red gem. When you attune to it, the gem appears to blink when viewed from certain angles, like an eye that is always watching you. The amulet has 3 charges which it regains every dawn. While holding it, you can use an action to expend 1 of its charges to unleash the fury of a dragon’s breath. Choose acid, cold, fire, lightning, or poison. Each creature in a 15-foot cone must make a DC 15 Dexterity saving throw, taking 14 (4d6) damage of the chosen type on a failed save, or half as much on a successful one.