Lesser Voraxia (3.5e Feat)
From D&D Wiki
Prerequisite: You must perform the Lesser Legacy ritual associated with Voraxia, Least Voraxia
Benefit: You can pay the Personal Costs associated with Voraxia, Heaven`s fangs to unlock and use the especial abilities of said weapon from levels 11 to 16
Normal: You can neither pay the personal costs, nor use any of its especial abilities.