From tiddy mun and tiddy men, a fenland/Lincolnshire legend. I added in the capacity to lower or raise water just as a means for them to actually survive. And because it amuses me.
Tiddy
by Cab Davidson
Stat Tiddy AC: 7 HD: ½** Movment: 120' (40') Attacks: 1 club or special Damage: 1d2 or special No. Appearing: 0 (3d8) Save As: E1 Morale: 7 Treasure Type: R Intelligence: 13 Alignment: Neutral XP Value: 7 The tiddy people are possibly the most bizarre looking of all fey races. No larger than newborn human babies, with thin, spindly legs and arms and heads and feet almost as large as those of adults. All have long, shaggy beards, male and female.
They make their homes in swamp and fenland, the only habitat in which they are not completely helpless. They can become invisible at will, but even striking with complete surprise they are barely competent in combat. Indeed it would seem unlikely that the tiddy could survive at all, and this would be impossible for them outside of their beloved wetlands. However they have a means both of attack and defence in such terrain that make them almost undefeatable.
In any wetland, each tiddy can create a modified lower water or raise water effect, once per round. They can only affect a single creature, and the water level beneath them can be raised or lowered by up to 30’. Their target does not get a saving throw against this effect. They can also do this at their own location, effectively disappearing instantly. After doing so they may reappear standing in any pool of water up to 240’ away. Any other creature affected must either sink or swim. The water level in that location returns to normal after 3 turns.
Fenland farmers know to treat the tiddy with respect, and in areas where they are known to reside a small part of the first harvest of the season is always left for the tiddy. Farmers know if their local fenland is populated by the tiddy because of the presence of large, flat stones called strangers stones, on which the tiddy dance on moonlit nights. There is rumour that their king, Tiddy Mun, travels between all of the locations where the tiddy reside. Tiddys are mortal enemies if grindylows, who hunt them for meat.