▶ Ancient hero's soul is usually a key combination material for unsealing the sealed mastery set purchased from 'priest James.' ▶ To be able to develop 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://rowanjnruy.theobloggers.com/41356008/ancient-hero-soul-things-to-know-before-you-buy