The Storm Demon's Soul is a consumable item in Demon's Souls.
Availability[]
Dropped by the boss Storm King.
General Information[]
The Storm Demon's Soul can be used to ascend a Short Sword+8 into the Morion Blade with Blacksmith Ed.
It can also be used to purchase the miracle Anti-Magic Field from Saint Urbain.
It can also be consumed for 48,000 souls.