▶ Ancient hero's soul is usually a key combination material for unsealing the sealed mastery set purchased from 'priest James.' ▶ To be able to produce the ancient hero's soul, you may need the set item containing MU continent's soul as a mix substance for the overall mixture by NPC https://garrettejnru.verybigblog.com/34231088/not-known-details-about-ancient-hero-soul