Board (Super Mario RPG: Legend of the Seven Stars)
From the Super Mario Wiki
A Board, also called a block, is a square-shaped yellow platform that hovers above the ground. It is found in the game Super Mario RPG: Legend of the Seven Stars. Boards usually come in pairs. When Mario jumps on one of the platforms the other one revolves around it. When Mario jumps to the next Board, the platform he was previously standing one begins to revolve around the one he is currently standing on. Thus, these platforms can be used to cross lava-filled rooms or to reach Treasure Boxes that are too high for Mario to reach with his jumping ability. Not all Boards move the same speed; some move fast while others move slow. As such, Mario has to plan his jumps accordingly.
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