Gorgeous D30 with a splash of green set in black.
Great for every dice goblin!
A 30 sided dice is usually used to randomly determine which day of the month it is, which day an event falls on or perhaps something else your campaign needs! Maybe it's just to make the other players jealous. In my experience it's used by the dungeons master to make the players nervous.
Choking hazard: Not suitable for children under 3 years.