The Dawn Cataclysm was an attempt by the god Lathander to reshape the pantheon of deities more in his own image. It is unknown when this event occured but Lathander failed, only succeeding in killing Murdane, the goddess of pragmatism, who was opposed to Lathander's idealism. It has been theorised, though not confirmed, that the Dawn Cataclysm had knock-on effects that affected the Realms.