The Pureblood Demon's Soul is a consumable item in Demon's Souls.
It radiates a strong power…
Grants the holder a large number of Souls when used.
Alternatively, it can be made into spells, miracles, or weapons.
Dropped by the boss Maiden Astraea.
The Pureblood Demon's Soul can be used to ascend a Broken Sword into the Blueblood Sword.
It can also be used to purchase the spell Death Cloud from Sage Freke, the spell Relief from Yuria the Witch, or the miracle Resurrection from Saint Urbain.
It can also be consumed for 48,000 souls.