Anyway, I know a lot of players have been disagreeing with Shellder's placement for a while (not necessarily in this thread), and I think it's time it got moved up. Shellder being a phenomenal sweeper in the current metagame is indisputable; it's arguably comparable to Shell Smash Tirtouga in its effectiveness, if not better. Because it gets around common end-all sweeper checks present on offense teams, such as Abra and Fletchling (if Ice Shard is run), winning with Shellder against these teams can usually be done by just getting hazards up, weakening Pawniard and/or Magnemite sufficiently (or trapping Fletchling if HP Fighting or Razor Shell is run over Ice Shard), and finally setting up, the last part which is quite easy to do thanks to Shellder's initially massive physical bulk. Even against more defensive teams, it's often a matter of Knocking Off or weakening some Pokemon that tend to be really easy to Knock Off/weaken (I mean Spritzee/bulky Fighting-type/Ferroseed level easy), not to mention how difficult it is to switch into repeated Icicle Spears or Rock Blasts for a lot of Pokemon present on slower teams. I don't know how I can elaborate further; it's just really, really easy to sweep with Shellder, more than several sweepers that are currently ranked higher than it.