Advent-ure Calendars (TM) are filled with custom polyhedral dice that follow a theme. Black Oak’s calendars are inspired by traditional advent calendars, and they help you count down your holidays or any other event while celebrating a love of dice. Each day, a new chamber is opened and inside you will find custom polyhedral dice that feature all new, never before seen designs. You will never find old overstock dice or standard mass-produced sets in the calendars.