Earth Magic

Your ancestral connection with the earth allows you to tap into the Elemental Plane of Earth to harness its magic. You learn the mold earth cantrip. You also learn stone shape and stoneskin, each of which you can cast once without expending a spell slot. You regain the ability to cast these spells in this way when you finish a long rest.

Constitution is your spellcasting ability for these spells, and you cast them at their lowest possible level.