Extended universe sigil Xa'ligha, the "The Demon of Dissonance" and "The Master of Twisted Sound", appears to be an avatar of Tru'nembra or of Rla Tfuthla, assuming that they are not the same creature. Xa'ligha dwells in Dissonance, whatever that crytic phrase alludes to. "The Xa'lugha Tree" is mentioned as connected with the Lake of Hali and Xa'ligha itself acts in concert with the King in Yellow at times. There might be a connection to the Gulf of S'glhuo.

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