From LSWiki

Class: Language Skills
Attribute: Intellect
Pedagogy: Procedural
Practitioner Term: Speaker of Ngaathgl
Hidden Skill
Language Sound: Lugubrious
Language Difficulty: Very Hard
Language Speed: Typical
Language Overlaps:
  Phglek: limited

The ability to speak and comprehend Ngaathgl, the elder tongue used by the gogtzul and certain of those lloigor whose alien minds encompass the faculty of speech.

Notes

Trainers

R'lyeh : Ithnagl wanders < 19
Association:
Crafty Linguists: Janid Suzak Wanders
Deep Ones: Dagon
Deep Ones: Mother Hydra
Ghaunadaur: Ralgor
Guild:
Quest: