Dryads of Mystara
by HåvardVARIANTS/SUBRACES (Official)
Dryad
Hama-Dryad
Nixie
VARIANS/SUBRACES (Unofficial)
Mountain Dryad (Oread)
River Dryad (Nymph)
Salt Water Nixie (Nereid)
Fresh Water Nixie (Naiad)
Nøkk - Water spirit found in Rivers and Coves, usually taking male shape, but also with the ability to shapechange into a horse.
Fossegrim - Spirit found near waterfalls, known for their musical abilities. Often found in the Northern Reaches and Norwold.
I wasn't quite sure if I should include Nixies and their varieties here, but Nixies are described as water spirits so that suggest they are not proper Fairies in BECMI terms. I also think that grouping them with Dryads has some potential when it comes to exploring their similarities and differences. I am also pondering to whether to include a connection to Sylphs here even though they are specifically said to be water elementals. Another interesting idea could be to explore the relationship to Medusas which in BECMI are said to be of earth elemental nature.