Calm Amazing Flyin' Hammer Brother
From the Super Mario Wiki
The C. A. F. H. Bro is almost exactly like an A. F. H. Bro, except this one is usually found asleep. Princess Peach will have to walk very slowly in order to keep it from waking up. Once woken up, it acts like a normal A. F. H. Bro. If Peach were to defeat the enemy before it wakes up or immediately after, the flying platform will not move.
According to the Glossary in the game, one should "Attack this sleeping enemy without getting close."
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