100% increased Life Leeched per second
30% increased Damage while Leeching 
Brutal Fervour is a notable Ascendancy passive skill for the Slayer that grants increased life leech per second and grants increased damage while leeching. It also modifies life leech effects to not get removed when the player reaches full life. This effect does not work with Ghost Reaver, as leech effects are removed at full energy shield. Instant life leech effects from sources such as Atziri's Acuity or Vaal Pact end immediately regardless of whether you are at full life or not — Endless Hunger does not preserve or store such effects.