Planar Influence: Evil, Gehenna

Your time channeling cosmic forces has caused your body to be tuned to the energies of a single Outer Plane. Choose an Outer Plane that matches at least one alignment with your Scion of the Outer Planes feat. 
(These feats are based on Planar Influences found in Morte’s Planar Parade. As such, some have been edited to better match being used by PCs)

Creatures influenced by Gehenna appear haggard and have long, crooked limbs. You also gain one or more of following traits of your choice:

Treasure Sense. You can pinpoint, by scent, the location of precious metals and stones, such as coins and gems, within 60 feet of you.

Vitality Theft. An invisible, magical aura surrounds you. Whenever another creature regains hit points within 5 feet of you, you can have half of those regained hit points (rounded down) go to you instead. 

In addition, if you activate any one of these features and your alignment is not Neutral Evil or Lawful Evil, make a DC 5 Wisdom saving throw. On a failure, roll a d20. An odd value changes your alignment to Neutral Evil, an even value changes it to Lawful Evil. A short or long rest or a dispel evil and good spell restores your original alignment.