Up to five creatures can feast upon a slain ophiotaurus's entrails. Each such creature is exposed to nightmare vapor poison (DC 27; Pathfinder RPG Core Rulebook 560), but also gains one of the following spell effects of her choice: discern location, divination, find the path, greater scrying (DC 21), moment of prescience, or vision (CL 15th). In addition, she may choose to accept a geas/quest to slay a specific mythic creature or creature of CR 20 or greater, gaining the effect of vengeful outrage when in combat with that opponent. Eating the entrails of a living ophiotaurus exposes the eater to the poison without any benefit. The save DC against the poison is Constitution-based, and the save DC against the spell effects is Wisdom-based.