In inXile/Krome's remastered Bard's Tale Trilogy, the Dreamspell can't be used in BT2 Destiny Knight until
you find five words in five dungeons, and say them in order at N9 E18 in Destiny stone. Unlike similar quests, you have to actually visit the locations with the magic mouths. They aren't spotted by SOSI, which makes them harder to find.
In the current version of the game, you can't access the room until the requirements are satisfied.
Where are the words found?