Obtained by killing Gwyn, Lord of Cinder.
Gives 20000
Sells for 40000
Unique Weapon made using this soul:

Unique Miracle acquired using this soul:
  • Sunlight Spear (must be a member of the Warrior of Sunlight covenant to obtain)

Highly recommended you either obtain the Sunlight Spear, or create the Great Lord Greatsword. Do not "use" this soul.