So, I'm here to make some Gen 4 Viability Ranking nominations... Drifblim A --> A+ Drifblim has proven to be a large threat in PU mainly due to it's Sub CM set. It is a great late game sweeper, with a limited amount of answers, who can be handled or at least weakened over the match before Drifblim is sent out. It hits most of the tier with it's STAB Shadow Ball and great coverage in the form of Thunderbolt. It can use many mons as setup fodder, being able to switch on many mons easily due to having a good typing, along with decent natural defenses and that fantastic HP stat, that walls many mons. And that's not to mention the Special Defense Boost it gets through Calm mind, along with the boosted Special Attack and the Speed from Unburden, which outspeeds all unboosted mons. On top of that, it doesn't have to fear being statused thanks to sub, so slowing it down with paralysis or widdling it's HP down with burn or toxic cant be used as answers. This all allows Drifblim to rightfully claim it's place in A+ of Gen 4 Viability Rankings. Gastrodon B+ --> A- Gastrodon is great since it is able to be used as an answer for some of Gen 4 PU's greatest threats, such as Poliwrath, Rhydon, and Muk. It has good defenses and a great HP, along with a great defensive typing. It can run multiple sets, either specially defensive or Curse Setup, making it that much less predictable as to which set it will be. It gets great coverage by simply running it's STAB attacks, in the form of Waterfall and Earthquake. It has reliable recovery in the form of Recover, make it able to switch in that many more times, and can easily get opportunities to take advantage this as it forces out the mon it switches in on. As for its switchins, it can run toxic to widdle them down, limiting how many times they can switch in and out. It can also run curse, which can raise its already good Defense, allowing you to invest more in it's Special Defense, long with it's Attack, letting it put an even larger dent in the opponent's team, all at the risk or lowering Speed, which your not outspeeding much with in the first place. So get Gastrodon out of B+ and move it to the Big League that is A-. That may have been an unintentional reference. I'm not sure.