Covenstones can be crafted in a great variety of different forms but are usually large enough to form a decent centre-piece for a ritual. Regardless of the precise form it takes, a coven that uses one is careful to ensure that it plays a central role in their ceremonies. A covenstone is a potent representation of the bonds that tie a coven together and the power that their oaths allow them to wield. They are usually bespoke and thus depict runes and motifs that are relevant to the coven for which they were made.