The Babylonians used incense while offering prayers to divining oracles. The Etruscans were well known for the practice of divining by the entrails of sheep. The forked twigs of witch-hazel are preferred as divining rods. Kru Khmers specialise in several categories, such as bone setting, herbalism or divining. In his youth, Cowdery hunted for buried treasure using a divining rod. In Brazil, flint is used as a divining stone for gold, treasure and water. Atrocitus uses a divining ritual and locates Proselyte in the mid-Atlantic United States. According to Atrocitus' divining ritual, Ophidian can be found in the upper midwestern United States. An artist error shows the Sinestro Corps symbol on Atrocitus' divining ritual map. According to Atrocitus' divining ritual, the Butcher can be found in the northwestern United States. Divining rods should be cut on this day. According to Atrocitus' divining ritual, Adara can be found in the northeastern United States. These prayers were performed for the purposes of divining. Various methods exist for divining personality type. A "divining cup" was supposed to be able to detect poison.