|Param. Bonus||Req. Param.|
|Weapon Type||Straight Sword|
|Notes||It's the only weapon in the game that scales with Luck.|
The Blueblood Sword is created by giving Blacksmith Ed the Pureblood Demon's Soul, which can be created from an un-upgraded Broken Sword. As with the other Boss Soul Weapons, Blacksmith Ed must have been given the Red Hot Demon's Soul beforehand.
While it has some minimal scaling in Strength, Faith, and Magic, the Blueblood Sword unusually scales with the Luck stat. Scaling benefits start slowing at around 25-30 Luck. The Blueblood Sword's fast moveset, decent damage, and its ability to be buffed make it a competitive weapon.