BW NU has been around for quite a while, and while there has not been many big tier shifts besides the first one, the NU metagame sure has changed a lot. Many Pokemon -- some even considered the top threats -- have dropped down massively in usage for one reason or another. In this thread, we talk about the Pokemon that used to be considered the best of the best at the time, but then dropped of in usage ("flavors of the month"). There can be many reasons why these Pokemon fell down in usage: new Pokemon dropped down, people started preparing for that particular Pokemon, or it may have just been plain overhyped. In addition to that, you should also talk about how viable they are in the current metagame as well as what set you would run on them now.
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To start off this discussion, I'd like to bring up Gorebyss. Gorebyss was the first suspect in NU and was very scary in the metagame. People started using Electric-type revenge killers such as Choice Scarf Rotom-Fan because they could outspeed Gorebyss even after a Shell Smash and OHKO it.
In the current metagame, Gorebyss is pretty rare, although it still makes me a bit afraid when I see it in the team preview. While Ludicolo dropped down soon after Gorebyss was suspected, and Gorebyss' usage went down because of that, it is likely that Ludicolo isn't the only reason Gorebyss stopped being a top threat.
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To start off this discussion, I'd like to bring up Gorebyss. Gorebyss was the first suspect in NU and was very scary in the metagame. People started using Electric-type revenge killers such as Choice Scarf Rotom-Fan because they could outspeed Gorebyss even after a Shell Smash and OHKO it.
In the current metagame, Gorebyss is pretty rare, although it still makes me a bit afraid when I see it in the team preview. While Ludicolo dropped down soon after Gorebyss was suspected, and Gorebyss' usage went down because of that, it is likely that Ludicolo isn't the only reason Gorebyss stopped being a top threat.