Nixie

3’ tall sprites that appear as attractive women with blueish, greenish, or greyish skin. Lair in the deepest parts of rivers and lakes.

AC7 [12], HD1 (4hp),
Att 1 × weapon (1d4) or 1 × group spell (charm), THACO 19 [0],
MV 120’ (40’), SV D12 W13 P13 B15 S15 (Elf 1),
ML 6, AL Neutral, XP 10, NA 0 (2d20), TT B

• Shy: Will try to charm intruders, rather than entering combat.
• Weapons: Daggers and small tridents (as spears).
• Charm: 10 nixies together can cast a charm to enchant a victim to serve them for one year. Save versus spells or be charmed: move towards the nixies (resisting those who try to prevent it); defend the nixies; obey the nixies’ commands (if understood); unable to cast spells or use magic items; unable to harm the nixies. Killing the nixies breaks the charm.
• Summon giant bass: Each nixie can summon one fish to aid in combat (see Giant Bass).
• Bestow water breathing: Can cast upon charmed slaves. Lasts for one day, then must be refreshed.

Source: Classic Fantasy