5e Roguish Archetype: Thief of Life

The Thief of Life Archetype is available to the Rogue class.

A Thief of Life is a Seeker of the Blood of Vol. They use their understanding of blood, death, and divinity to to unlock personal power and to cheat death itself.

Lifesense
Starting at 3rd level, you can sense living creatures within 5 feet of you as if you had blindsense.

The range increases by 10 feet when you reach 9th leveI (15ft), 13th leveI (25ft), and 17th leveI (35ft).

Borrow Vigor
Also starting at 3rd level, you gain temporary hit points when you drop an enemy to 0 hit points or lower. The amount of temp HP gained equals your (Rogue level+creature's HD)/2. These temporary hit points last a maximum of 1 hour.

Steal Vitality
Starting at 9th level,

Immunity to Death Effects
Starting at 13th level,

Steal Immortality
Starting at 17th level,