Glaistig (CR 6)

Medium Fey
Alignment: Always chaotic neutral
Initiative: +1 (Dex); Senses: low-light vision, Listen +9, and Spot +8
Languages: Common, Elven, and Sylvan


AC: 15 (+1 Dex, +4 natural), touch 11, flat-footed 14
Hit Dice: 6d6+12 (33 hp); DR: 5/cold iron
Fort +4, Ref +6, Will +9
Speed: 30 ft., swim 50 ft.
Space: 5 ft./5 ft.
Base Attack +3; Grapple +4
Attack: Bite +4 melee or dagger +4 melee
Full Attack: Bite +4 melee and dagger +4 melee
Damage: Bite 1d6+1, dagger 1d4+1/19-20
Special Attacks/Actions: Beguiling song, blood drain, spell-like abilities
Abilities: Str 12, Dex 13, Con 14, Int 13, Wis 14, Cha 19
Special Qualities: resistance to cold 10 and fire 10, water breathing, water symbiosis
Feats: Ability Focus (beguiling song); Alertness; Iron Will
Skills: Bluff +14, Diplomacy +12, Disguise +12 (+14 acting), Escape Artist +7, Hide +3, Intimidate +12, Knowledge (nature) +5, Listen +9, Move Silently +7, Sense Motive +11, Spot +8, Swim +18, and Use Rope +1 (+3 with bindings)
Advancement: By character class
Climate/Terrain: Temperate forests
Organization: Solitary
Treasure: Standard

Source: Monster Manual III