Fire Keeper Soul

Description
Soul of a long-lost Fire Keeper. Each Fire Keeper is a corporeal manifestation of her bonfire, and a draw for the humanity which is offered to her. Her soul is gnawed by infinite humanity, and can boost the power of the precious Estus Flask. Reinforced Estus Flasks capture denser Estus, allowing for increased restoration of HP.

Usage

 * Can be consumed, the Fire Keeper Soul will grant the user with 5 units of Humanity, and restore full health. Consuming is not recommended because of its limited benefits, while upgrading flasks provides permanent benefits.
 * You can Give the Fire Keeper Soul to one of the three Fire Keepers: Anastacia of Astora below Firelink Shrine. Quelaan in Quelaag's Domain. Or Darkmoon Knightess at the main bonfire in Anor Londo. to reinforce Estus Flasks, to increase its healing powers (not the amount of estus you can carry)

Locations

 * One is located in Undead Parish. It is on an altar in the Undead Church, guarded by a Tower Knight
 * One is located in New Londo Ruins. It can be seen on the right hand when crossing the narrow wooden walkway. Three ghosts will spawn when getting near.
 * One is located in Blighttown. In a wastewater pit, guarded by fire-dogs and poisonous dart shooters.
 * One is located in the Dukes' Archives. At the bottom of the prison tower, behind the octopus-headed monsters. Need the Archive Tower Giant Cell Key that is acquired later in the level, do not confuse this with the Archive Tower Giant Door Key.
 * One is obtained after killing Quelaag's Sister. Please note that you won't be able to join the Chaos Servant covenant or use the bonfire in front of her anymore (with the exclusion of being able to warp to, but not from, that location).
 * One is obtained after killing Darkmoon Knightess in Anor Londo at the first bonfire. If you decide to kill her for her soul, her bonfire will no longer be lit but you may still warp there using the Lordvessel.