Since there are dedicated elemental dwarfs (Azer, Urdinir), and some Elf (Genasi, Gaele) - Air: Skyye (sek-aye) - Fills the remaining core gap in the elemental traveller races - Positive: Fiire (feer-ay) - A thing in D&D, maybe they can be repurposed to do positive energy? - Water: Aquua (uh-coo-uh) - Fine, I'll do aquatic elfs. Probably tied to the Erume and the Aboleth Dwarf - Earth: Urdinir - - Fire: Azer - Fire Dwarves who were taken in an invasion of the material plane. - Negative: Ethir - Death Dwarves who serve as messengers and liase between the dwarven ancestors and their living kin. Halfling (Mephling) - Unsure of their origins, but there are mephlings for each of the elements.