Hold Your Breath
From the Super Mario Wiki
Hold Your Breath is a course which appears in the Story Mode of Super Mario Maker 2. It is given to Mario by Soundfrog, and is set in the forest theme and the New Super Mario Bros. U style. Once this course is completed, hills will appear throughout Peach's Castle.
The level begins with a few ? Blocks and a Spiny. A few Magikoopas then appear next to some Brick Blocks and a 10-Coin, followed by a Big Piranha Plant and then a Big Spiny soon after. Some more Magikoopas then appear next to a ? Block containing a P Switch and a multitude of Brick Blocks, with the Goal Pole following not too long after.
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