The treaty that broke the back of the Ezdhûlian people and stalled the advancement of technology indefinitely.
The Edicts handed down for millennia in the lands of Tarthus that govern the practice of Necromancy.
The folk song sung by those on the run from the law, lamenting all that they've lost along the outlaw's trail.
The shanty passed down from sailor to sailor, warning of the dangers of the legendary ghost armada knows as The Ramshackle.