As a magma genasi, you are descended from the Ubrai in the Fountains of Creation, the area between the Plane of Fire and Earth. You experience emotions fully and passionately, with your moods shifting from calm to wild and violent with little warning, but at the same time are stern and unchanging.
Magma genasi typically have dark brown skin, while their hair drips with liquid stone that gives off no heat, and eyes that appear as coals. A faint but constant heatwave accompanies them, warming those nearby. Some magma genasi speak with gravelly voices, and a few display odd protrusions in their flesh or grow rocks from their limbs that are never in the same place daily.