Deep Gnomes
Ability Score Changes: +1 Dexterity, +2 Intelligence.
Size: Small
Speed: 25-ft
Special Senses: Superior Darkvision(120-ft)
Languages: Common, Gnomish, Undercommon.
Special Proficiencies: None.
Gnome Cunning: Advantage on all INT, WIS, and CHA Saving Throws against Magic.
Stone Camouflage: Advantage on Stealth checks to hide in rocky terrain.
Optional Feat: Svirfneblin Magic
You can cast Nondetection on yourself at will, without material components. You can also cast Blindness/Deafness, Blur, and Disguise Self once each between long rests.