Clerical Work: Specialty Priests of Talona for D&D 5th Edition

I'm importing the idea of Specialty Priests and channeling a bit of DnD 4E by treating them as Feats.

Specialty Priests of Talona

Malagents Feat

Prerequisite: Cleric with the Death Divine Domain

• You are proficient with a  Poisoner's kit.

• You have poison resistance.

• You may make a Wisdom (Perception) skill check to identify a poison by smell.

• You are immune to non-magical diseases and have advantage when making saving throws against magical diseases.