“Planetouched” isn’t so much a race as it is a classification. These are the people who have been changed by the planes (or are descended from such changed people). Some were exposed to strong, raw elemental magic and were changed by that. Others can trace their bloodline back to an Outsider ancestor. Planetouched people bear physical traits related to their subtype (such as horns, stony skin, etc.) and often have residual magical effects hanging about them.