Gnome Traits
Niemheim gnomes are clever, paranoid, and dangerous. They are drawn to arcane magic and make excellent sorcerers and warlocks. In addition to standard gnomish traits, their dealings with devils and their confinement give them two additional traits.
Bewildering Bargainers. You know how to lie, deceive, and intimidate with great aplomb. Your Charisma score increases by 1 and you have advantage on Persuasion checks.
Known in Hell. You speak the infernal tongue and are proficient in the Arcana skill.