Mistress of Sacrifice
Your Offering Skills also affect you
Your Offerings have 50% reduced Effect on you
40% increased Damage if you have consumed a corpse Recently
2% increased Attack and Cast Speed for each corpse consumed Recently 
Mistress of Sacrifice is a notable Ascendancy passive skill for the Necromancer that grants increased skill effect duration and causes bonuses granted from offering skills to apply to the user as well, at a reduced effect. It also grants increased damage if you have used a corpse in the past 4 seconds and attack speed and cast speed per corpse used in the past 4 seconds.