How can it be that Uranus effect prevents the "sanguine swamp" from destroying itself, while the same effect does not apply to mirror wall ?
Ha ha despair for Uranus ha ha
Because there is a cost to pay to maintain Mirror Wall. Cost cannot be prevented. Sanguine Swamp doesn't have any cost. No, not being able to use other Spell/Trap cards isn't considered as a cost. By the way, I used to spam this page, but I am now reformed.