d647950c_d___Game_Guide_and_Walkthrough__BONE_CHARM_PROPERTY
[BONE CHARM NAME] Falling Star [USEFULNESS] It is a good idea to wear this charm only if you like landing on enemies to kill them. [BONE CHARM PROPERTY] 
You receive mana points each time you kill an enemy from above by jumping down on them.
Bone Charms - list - Collectibles - Dishonored - Game Guide and Walkthrough
BONE CHARM PROPERTY