Dark Folk (5e Race Variant)
From D&D Wiki
Just as the drow were elves driven below ground centuries ago and warped over the millennia by the dark forces they worshiped, it is speculated that dark folk were humans that came to be in the same way. But alas, this is only speculation; the race of dark folk are shrouded in mystery—partly due to their merciless hostility to other races, as well as the fact they do not keep written records.
This is a variant of the human variant that forgoes gaining a feat for the traits listed below.
Ability Score Increase. Your Dexterity score increases by 1.
Purveyor of Death. You have proficiency with the poisoner's kit.
Death Throes. When a dark folk is slain, their body combusts in a flash of white-hot flame. This acts like a fireball spell, but deals only 1d6 damage per 2 hit dice possessed by the dark folk. This is considered a supernatural ability and miraculously does not seem to harm a slain dark folk's belongings (so long as the fire is put out quickly). The save DC is equal to 8 + (proficiency bonus) + (Constitution bonus).