Astragalomancy is divination through the medium of dice.
Historically, knucklebones were marked with letters or numbers and then cast (or rolled) in a similar way to runes, bones, and gemstones. One weighs the responses based on the numbers. There are multiple ways to value the die, including where it falls or dedicating them to specific meanings or elements.
Astragalomancy can give an insightful view on multiple topics, also giving the proper weights to the answers it provides. It can be used in elemental, general, shadow, and many other readings. It can also be used to enhance readings.