After the battle, she chants another poem celebrating the victory and prophesying the end of the world. In another story, she lures away the bull of a woman named Odras. Odras then follows the Morrígan to the Otherworld, via the cave of Cruachan, which is said to be her "fit abode." When Odras falls asleep, the Morrígan turns her into a pool of water that feeds into the River Shannon. In this story, the Morrigan is called the Dagda's envious queen, fierce of mood. She is also called a "shape-shifter" and a cunning raven caller whose pleasure was in mustered hosts. The Morrígan is often considered a triple goddess, but this triple nature is ambiguous and inconsistent. These triple appearances are partially due to the Celtic significance of threeness. Sometimes she appears as one of three sisters, the daughters of Ernmas: Morrígan, Badb and Macha. Sometimes the trinity consists of Badb, Macha and Anand, collectively known as the "Morrígna". Occasionally, Nemain or Fea appear in the various combinations. However, the Morrígan can also appear alone, and her name is sometimes used interchangeably with Badb. The Morrígan is mainly associated with war and fate, and is often interpreted as a "war goddess". Hennessy's "The Ancient Irish Goddess of War", written in 1870, was influential in establishing this interpretation. She is said to derive pleasure from mustered hosts. Her role often involves premonitions of a particular warrior's violent death, suggesting a link with the banshee of later folklore. This connection is further noted by Patricia Lysaght: "In certain areas of Ireland this supernatural being is, in addition to the name banshee, also called the "badhb"". Her role was to not only be a symbol of imminent death, but to also influence the outcome of war. Most often, she did this by appearing as a crow flying overhead, and would either inspire fear or courage in the hearts of the warriors. In some cases, she is written to have appeared in visions to those who are destined to die in battle as washing their bloody armor. In this specific role, she is also given the role of foretelling imminent death with a particular emphasis on the individual. There are also a few rare accounts where she would join in the battle itself as a warrior and show her favouritism in a more direct manner.