Norma Cenva is a fictional character from the Dune universe created by Frank Herbert. Mentioned briefly in Herbert's God Emperor of Dune (1981), she plays a large role in the Legends of Dune prequel trilogy (2002–2004) written by Brian Herbert and Kevin J. Anderson. The character reappears as the Oracle of Time in the Brian Herbert/Anderson novels Hunters of Dune (2006) and Sandworms of Dune (2007), which conclude the original series.
Read more about Norma Cenva: God Emperor of Dune, Sisterhood of Dune, The Oracle of Time