Mean love potion, subject to tons of abuse and causing untold grief. Thumbs up. The part about the original inventor resembles Daedalus - and the ruler's folly was akin to that tale; also, he gained naught, for there still had to be alchemists who knew the secret to make it.
Perchance was Fenberk opposed to the substance's abuse and wanted it destroyed?
Beautifully rendered and realized location. Great balance between the evocative imagery and the "real".
(The handful of frost giants still found in the region are descendants of those enslaved goliaths).
Very nice ^. I can picture PCs encountering one of these descendants, and hearing the legends of the tower passed down from the enslaved ancestors