Boss Soul Weapons - Dark Souls

Boss Soul weapons are weapons which can be crafted from the souls that are dropped by some bosses throughout the game. There are multiple weapons which can be constructed from the souls (usually two). You can also consume the Boss Souls if you wish, but they are best reserved for the construction of these unique weapons - especially if you are going for the associated achievement/trophy.

The Process

To construct a Boss Soul Weapon you must do the following:

1. Start with the base weapon type that's specified below and then upgrade it to +5 with Titanite Shards by using a blacksmith such as Blacksmith Andre in the Undead Parish.
2. Upgrade the weapon further to +10 using Large Titanite Shards. To do this you must first give the Large Ember (found in The Depths) to Andre.
3. Ascend the weapon by using the Giant Blacksmith in Anor Londo, 5,000 souls and the boss soul to then create the Boss Soul Weapon.
4. You can then upgrade this weapon further by using Demon Titanite to a total of +5.

List of Boss Soul Weapons

The following is a list of Boss Souls Weapons. Click on the specific weapon to get a list of compatible base weapons:

Soul Required	Resulting Weapon	Base Weapon Required	Notes
Soul of the Moonlight Butterfly	Moonlight Butterfly Horn	Ascend a +10 Thrust weapon with the Moonlight Butterfly's soul at the Giant Blacksmith in Anor Londo. Compatible Weapons: See Piercing Swords See Spears Any normal weapon with thrust in its item description
Soul of the Moonlight Butterfly	Crystal Ring Shield	Ascend a +10 Shield with the Moonlight Butterfly's soul at the Giant Blacksmith in Anor Londo. Compatible Shields: See Shields	Parry is replaced with ranged magic attack
Soul of Quelaag	Quelaag's Furysword	Ascend a +10 Curved Sword type weapon with the soul of Quelaag at the Giant Blacksmith in Anor Londo. Compatible Weapons: See Curved Swords	This sword changes the player's move set
Soul of Quelaag	Chaos Blade	Ascend a +10 Katana with the soul of Quelaag at the Giant Blacksmith in Anor Londo. Compatible Weapons: See Katanas	Damages user on successful hit
Core of an Iron Golem	Dragon Bone Fist	Ascend a +10 Fist Weapon with the Iron Golem's soul at the Giant Blacksmith in Anor Londo. Compatible Weapons: See Fist Weapons
Core of an Iron Golem	Golem Axe	Ascend a +10 Axe Weapon with the Iron Golem's soul at the Giant Blacksmith in Anor Londo. Compatible Weapons: See Axes	Has a powerful ranged wave attack (Like the ranged attack the Iron golem uses in the bossfight)
Soul of Ornstein	Dragonslayer Spear	Ascend a +10 Thrust weapon with Ornstein's soul at the Giant Blacksmith in Anor Londo. Compatible Weapons: See Piercing Swords See Spears	One-handed strong attack launches a bolt     of lightning
Soul of Smough	Smough's Hammer	Ascend a +10 Hammer Weapon with Smough's soul at the Giant Blacksmith in Anor Londo. Compatible Weapons: See Hammers See Great Hammers	Absorbs a small amount of HP with each hit
Soul of Sif	Greatsword of Artorias	Ascend a +10 Broken Sword Weapon with Sif's soul at the Giant Blacksmith in Anor Londo. Compatible Weapons: Broken Sword Broken Hilt	Any other sword used to ascend will result in the cursed Greatsword of Artorias
Soul of Sif	Cursed Greatsword of Artorias	Ascend a +10 sword/greatsword with Sif's soul at the Giant Blacksmith in Anor Londo. Compatible Weapons: See Straight Swords See Greatswords	One of the few weapons that can kill ghosts
Soul of Sif	Greatshield of Artorias	Ascend a +10 Shield Weapon with Sif's soul at the Giant Blacksmith in Anor Londo. Compatible Shields: See Shields	Successful blocks prevent status effects from attacks
Soul of Gwyndolin	Darkmoon Bow	Ascend a +10 Bow with Gwyndolin's soul at the Giant Blacksmith in Anor Londo. Compatible Bows: See Bows
Soul of Gwyndolin	Tin Darkmoon Catalyst	Ascend a Catalyst with Gwyndolin's soul at the Giant Blacksmith in Anor Londo. Compatible Catalysts: See Catalysts	Scales with Faith however it still needs the base Intelligence requirement to cast sorcery
Soul of Priscilla	Lifehunt Scythe	Ascend any +10 Halberd with Priscilla's soul at the Giant Blacksmith in Anor Londo. Compatible Weapons: See Halberds	Causes bleeding on user with successful hit
Soul of Gwyn, Lord of Cinder	Great Lord Greatsword	Ascend a +10 Sword Weapon with Gwyn's soul at the Giant Blacksmith in Anor Londo. Compatible Weapons: See Straight Swords See Greatswords See Ultra Greatswords	Does not cause fire damage like Gwyn does
Soul of Manus	Manus Catalyst	Ascend a Catalyst with Manus' soul at the Giant Blacksmith in Anor Londo. Compatible Catalysts: See Catalysts	Halves the uses of spells
Soul of Artorias	Abyss Greatsword	Ascend a +10 Sword Weapon with Artorias' soul at the Giant Blacksmith in Anor Londo. Compatible Weapons: See Straight Swords See Greatswords See Ultra Greatswords