Deep Speech

Script: Brush

Summary: Deep Speech not a singular language, but an umbrella term referring to the methods of communication aberrations use. Beholders, Mindflayers, Nothics, Slaadi, and Aboleths do not necessarily speak the same languages, but a person studying Deep Speech would need to understand all of them - and most likely go mad in the process. 

Sounds: The sound of Deep Speech varies from creature to creature, but can usually be identified by the presence of noises that most vocal cords couldn't realistically produce; Vibrations, creaking wood,  the dripping of water, etc..

Appearance: Some aberrations have their own written words, but the core concepts of Deep Speech - as perceived by those who study it - are expressed in a manner similar to elvish, with elaborate brushwork requiring a great deal of skill.