Duergar are dwarves whose ancestors were transformed by centuries living in the deepest places of the Underdark. That chthonic realm is saturated with strange magical energy, and over generations, early duergar absorbed traces of it. They were further altered when mind flayers and other Aberrations invaded and performed horrific experiments on them. Fueled by Underdark magic, those experiments left early duergar with psionic powers, which have been passed down to their descendants. In time, they liberated themselves from their aberrant tyrants and forged a new life for themselves in the Underdark and beyond.
Like other dwarves, duergar typically have a life span of 350 years.
Creating Your Character
At 1st level, you choose whether your character is a member of the human race or of a fantastical race. If you select a fantastical race, follow these additional rules during character creation.
Ability Score Increases
When determining your character’s ability scores, increase one score by 2 and increase a different score by 1, or increase three different scores by 1. Follow this rule regardless of the method you use to determine the scores, such as rolling or point buy. The “Quick Build” section for your character’s class offers suggestions on which scores to increase. You can follow those suggestions or ignore them, but you can’t raise any of your scores above 20.
Languages
Your character can speak, read, and write Common and one other language that you and your DM agree is appropriate for the character. Dwarvish and Undercommon/Abyssal are good choices.
Creature Type
Every creature in D&D, including each player character, has a special tag in the rules that identifies the type of creature they are. Most player characters are of the Humanoid type. A race tells you what your character’s creature type is.
Height and Weight
Player characters, regardless of race, typically fall into the same ranges of height and weight that humans have in our world. If you’d like to determine your character’s height or weight randomly, consult the Random Height and Weight table in the Player’s Handbook, and choose the row in the table that best represents the build you imagine for your character.
Duergar Traits
As a duergar, you have the following racial traits.
Creature Type
You are a Humanoid. You are also considered a dwarf for any prerequisite or effect that requires you to be a dwarf.
Size
You are Medium.
Speed
Your walking speed is 30 feet.
Darkvision
You can see in dim light within 120 feet of you as if it were bright light and in darkness as if it were dim light. You discern colors in that darkness only as shades of gray.
Duergar Magic
Starting at 3rd level, you can cast the enlarge/reduce spell on yourself with this trait, without requiring a material component. Starting at 5th level, you can also cast the invisibility spell on yourself with this trait, without requiring a material component. Once you cast either of these spells with this trait, you can’t cast that spell with it again until you finish a long rest. You can also cast these spells using spell slots you have of the appropriate level.
Intelligence, Wisdom, or Charisma is your spellcasting ability for these spells when you cast them with this trait (choose when you select this race).
Dwarven Resilience
You have advantage on saving throws you make to avoid or end the poisoned condition on yourself. You also have resistance to poison damage.
Psionic Fortitude
You have advantage on saving throws you make to avoid or end the charmed or stunned condition on yourself.