ADF promotes a neo-druidism in which worshipers perform rituals honoring three kinds of entities: gods and goddesses, ancestors (honored dead), and nature spirits. Examples of gods and goddesses worshipped include Lugh, Cernunnos, the Morrigan, Thor, Freya, Apollo, Athena, Vesta, Ceres, and many other ancient, pre-Christian, Indo-European deities. Although various pantheons or "hearth cultures" are allowed, "mixing and matching" unrelated deities within a single rite is discouraged. Ancestors usually refers to the direct blood ancestors of the worshiper, but can include other honored dead (friends, mythological heroes, etc.), too. Nature spirits includes general animal (totem) spirits as well as whatever spirits are present in the place of worship, such as a local river spirit. Most ADF rituals occur outdoors.