• 561 DR [Year of the Three Setting Suns]
  • The Guild of Naturalists forms in Myth Drannor and builds its hall within two years. »

  • 680 DR [Year of the Long March]
  • After more than a decade, wizards of the Guild of Naturalists piece together the clues and realize that Halaster Blackcloak has been abducting wizards all throughout Cormanthyr in retaliation for their plundering of his monsters in Undermountain. The guild mounts a rescue expedition into the dungeon, which never returns, and they quietly end their sorties to Undermountain. Attempts to dispel or destroy the gate connecting their hall with Undermountain meet with failure. »