You should be able to undo a Dungeon selection
I selected the option in Tombs of Annihilation "Oubliette", which I originally misread the "Discard a card and sacrifice a creature, an artifact, AND a land" as "... OR a land", so I wanted to undo the option since I did not have an artifact to sacrifice. This made me sacrifice a creature on the battlefield that I needed to not lose the next turn, which caused me to lose the game. If I could undo the option and select the other option, I would not have lost the game.
1
vote
CiamBros#60129
shared this idea