Vexing Doors - Super Mario Wiki, the Mario encyclopedia

Vexing Doors is an e-Reader level for Super Mario Advance 4: Super Mario Bros. 3. This card was released in Series 2 in Japan. Its official difficulty rating is ★★★★☆. It was initially released only in Japan, but it became available internationally when the game was released on the Wii U Virtual Console

So what's this new door enemy from Wonder called? If it doesn't

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Those who dream by day are cognizant of many things which escape