The functionality of the Spirit Stone is straightforward but deep. It allows players to add a fourth bonus stat to equipment (weapons, armor, shields, helmets).
: The "Pity System" encourages players to keep trying because they know progress is being made even during failures. Piatra Sufletului - Metin2 Wiki - Gameforge.com piatra spiritului metin2
: It gives value to low-tier materials used for attunement. The functionality of the Spirit Stone is straightforward