Elf magic is typically focused strongly around the sun, but not all elven disciplines rely upon its power for their magical energy. The Earthlight Elves are one such discipline; they enjoy the sun as many of their brethren, but they are equally at one with their magic no matter their surroundings.
For these accomplished magic users, spells are still powered by light, but the light upon which they rely is an imperceptible force provided not by the sun, but by the planet itself. As long as they have the Earth underfoot, Earthlight Elves are much more comfortable using magic than even the most experienced human mages.
As Exemplars, Earthlight Elves come with a trait called Serenity, which reduces the casting cost of all spells.
Disclaimer: be sure to verify the authenticity of any item that you purchase on OpenSea. Look for the blue checkmark that confirms that the item is from a verified collection.
Comment below what you may have heard, or how you think it will be used.