Accustomed to life underground, you have superior vision in dark and dim conditions. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

Your dual ancestry from an earth genasi and a hill dwarf grants you a hardy constitution, as well as increased strength and wisdom. Your Constitution score increases by 2, and your Strength score and your Wisdom Score each increase by 1.

Your hit point maximum increases by 1, and it increases by 1 every time you gain a level.

You can speak, read, and write Common, Dwarvish, and Primordial. Dwarvish is full of hard consonants and guttural sounds, and those characteristics spill over into whatever other language a dwarf might speak. Primordial is a guttural language, filled with harsh syllables and hard consonants.

Your base walking speed is 30 feet. Your speed is not reduced by wearing heavy armor.

Your ancestry mixes in curious ways - you could be as short as the smallest dwarf or as tall as the tallest genasi, but is more likely to split the difference.  Your character is between 4 and 6 feet tall, but is more likely to be around 5 feet tall.

You come from races with lengthy lifespans.  You age more slowly in your youth than a human or genasi (though faster than a dwarf), and you can expect to live to nearly three hundred years old.

You have advantage on saving throws against poison, and you have resistance against poison damage (explained in the “Combat” section).

You can move across difficult terrain made of earth or stone without expending extra movement.

You can cast the pass without trace spell once with this trait, requiring no material components, and you regain the ability to cast it this way when you finish a long rest. Constitution is your spellcasting ability for this spell.

You gain one feat of your choice.

You gain proficiency in one skill of your choice.