So, I was watching a new episode (for me) called Terror of Lucky Cards. I think there is a way to protect yourself from Joker when Happy Cards gadget is used. A card disappears when the owner asks a wish to get fulfilled and the person having the last card of Joker has to deal with something bad. So, I think when we see there are only two cards remaining, we can wish that all the cards get back in the gadget without any loss. By this all the cards would return and people can ask their wishes again. Shower your thoughts below.
I think I found an error in Hindi dub of this episode. The error is voice error, not animation error. People knowing Hindi can understand it easily. Since the Hindi VA of Doraemon is a girl, I think once while Doraemon was walking down the stairs along with Nobita, she said चलूंगी instead of चलूंगा. Did I misheard or she misspelled?