The third GSC UU iteration of the DerDomme Cup has just gone into signups so it is time to spark a fresh discussion on the GSC UU tier. Smogon's tier list was updated (Move your mouse to reveal the content) Smogon's tier list was updated (open) Smogon's tier list was updated (close) Firstly, each iteration of the tournament, as well as the GSC NU tournament hosted earlier this year, was played using the tier list available on Mount Silver (which mirror PO's tiers). In terms of Pokemon allowed in UU, there are three differences between that tier list and the one currently available on Smogon, namely Ampharos is allowed and Venusaur/Smeargle are banned. I am not advocating that one is better than the other but because (as far as I know) almost nobody plays using Smogon's GSC UU tier list, I will be going by the Mount Silver list, and I encourage everyone else to do the same. I have created a personal viability list here and am adjusting it as I become more experienced with the tier. The dominant Pokemon are Nidoqueen, Ampharos, Slowbro, and Scyther. Nidoqueen is the strongest Pokemon in the tier, being very effective both defensively and offensively. What it lacks in raw power it makes up for in coverage and defensive typing, stats, and movepool. While there are Pokemon who can stop Nidoqueen at least temporarily, Nidoqueen is often under no pressure at all when switching into certain Pokemon, whereas Nidoqueen's answers tend to be risking getting frozen or taking a critical hit. The standard instant recovery option in Moonlight enables Nidoqueen to repeatedly switch into Pokemon and wreak havoc, although it can also use alternative movesets effectively. Ampharos is an extremely strong Pokemon against a lot of the tier, threatening huge amounts of damage and paralysis with Thunder. It is also very tanky on the special side, with numerous special attackers failing to 4HKO, let alone 3HKO. However, it can do little to stop Nidoqueen switching in. Its options include hitting it for 30% on the switch or setting up a screen of its choice. The latter is more effective in dealing with Nidoqueen, but sacrifices coverage, which can be critically important against other Ground-types. Slowbro (and Slowking) are very bulky waters which can take on a lot of Pokemon and use a variety of sets, including a plain Rest Sleep Talk + 2 Attacks set, or a Thunder Wave set, or various others, and they deal significant chunks with their STAB attacks. Scyther is a flexible offensive Pokemon. It outspeeds most of the tier and given too many free turns can use SD to sweep on its own. However, when a slower Pokemon that beats Scyther one-on-one switches in, it can Baton Pass the boosts to a teammate, such as Nidoqueen, Granbull, Dodrio, Dugtrio, Piloswine, etc. Although they don't stand out as much as those above, Granbull, Politoed, Kabutops, Dodrio, Electabuzz, and Quagsire are big threats to look out for. Granbull is a powerful Restalker, capable of using either the utility-focused Heal Bell or the very threatening Curse alongside its STAB attack. Its bulk leaves a little to be desired and it can easily be put out of commission by a critical hit, and can be walled by various normal-resistances. Politoed is unpredictable and has well distributed stats. It can use a Surf + Growth set with Sleep Talk, Amnesia, Curse, or a secondary attack, and it is also capable of using Whirlpool and Perish song or even Lovely Kiss and Belly Drum. Building a team centred around Politoed is not a bad idea. Kabutops has a niche of being a normal-resistant Swords Dancer with respectable speed. Its Def stat makes it surprisingly durable and it can get AncientPower boosts in a pinch. Dodrio is a fast and powerful physical attacker. Few non-normal resistant Pokemon want to switch into Dodrio's STAB Normal attack, and it can also use Hidden Power Ground to fend off some of the normal resists. It doesn't have a lot of options outside of those, but can use Thief, Drill Peck, Substitute, Swagger, or even ResTalk, Low Kick, or Hyper Beam. Electabuzz, while hard-walled by Ampharos, is otherwise very difficult to outright wall. It is capable of using a Meditate or other specialised set to help it get past Ampharos, but this will limit its offensive coverage. Quagsire is incredibly scary for defensive teams. Its typing is key for facing HP Ice Ampharos. Its Belly Drum set can easily sweep slower teams, including when Quagsire receives Agility from Girafarig or Scyther. Curse Quagsire is not the worst idea either. Qwilfish is also particularly notable for being the tier's best spiker, and as usual Spikes are very useful to have, alongside phazers in particular. It also outspeeds and threatens Nidoqueen, and threatens the tier's best spinner. Blastoise is the tier's best spinner and is also a decent phazer. Ideally, in my opinion, it should be used with Spikes support to give it something to do against Qwilfish switch-ins (Roar). There are many other strong Pokemon in the tier, and I would consider anything that I rated 5.5 or above in my spreadsheet to be viable. Here is a sample team with a bunch of standard Pokemon with slight modifications: Hide (Move your mouse to the hide area to reveal the content) Show Hide Hide Hide Ampharos @ Leftovers Ability: Static IVs: 26 Def - Thunder - Hidden Power [Ice] - Rest - Sleep Talk Nidoqueen (F) @ Leftovers Ability: Poison Point - Earthquake - Moonlight - Ice Beam - Thunder Slowbro @ Leftovers Ability: Oblivious - Surf - Psychic - Rest - Sleep Talk Granbull @ Leftovers Ability: Intimidate - Curse - Rest - Sleep Talk - Return Qwilfish @ Leftovers Ability: Poison Point - Sludge Bomb - Spikes - Hydro Pump - Curse Crobat @ Leftovers Ability: Inner Focus IVs: 24 Atk / 26 Def - Haze - Toxic - Confuse Ray - Hidden Power [Flying] If you search for "Earthworm" in the replay viewer (at time of writing) you can watch a lot of GSC UU replays from today. I would like to hear what others have to say about the tier. Feel free to post interesting sets, replays, or criticisms.