Dungeon Descent | Illustration by Kasia Kafis' Zielinska Dungeon is a card type, introduced in the Adventures in the Forgotten Realms set, that allows you to venture down a series of rooms printed on the card to get a number of value-granting effects
Cards like Force of Will, Fierce Guardianship, Pact of Negation, and Force of Negation let you stop game-winning plays while tapped out, which is perfect for protecting your own combo turn or stopping someone else's
Even though it cant be used to cast artifacts, the fact it allows no threshold requirement makes it worth including in any deck
Condition matters more than usual because a damaged promo loses most of its premium
Honest answer: very playable out of the box, but not optimized
Nor it is a powerful game-changing event that you fully control, like Wrath of God or Insurrection