Boss
Bone Face
Drops
Chance per kill at an even level, before drop bonuses
83.25%
83.25%
83.25%
15%
15%
15%
15%
15%
15%
15%
15%
15%
15%
15%
15%
15%
15%
15%
15%
Fighting monsters far above or below your level lowers the drop chance; bosses are more forgiving. Drop events, gloves and premium raise it.