Boardgamegeek https://boardgamegeek.com/boardgameexpansion/148980/descent-journeys-dark-second-edition-queen-ariad-l
Anglais - Queen Ariad serves as the evil Overlord for the Labyrinth of Ruin campaign, and the Descent: Journeys in the Dark (Second Edition) - Queen Ariad Lieutenant Pack allows her to be used in other campaigns where she normally would not appear, even if one lacks the Labyrinth of Ruin expansion.