Here's one that may or may not be good, but I've had a lot of fun with it, at the very least (not sure if it's been posted or not, but if it hasn't it should have been.)
Pineco @ Berry Juice
Level: 1
Trait: Sturdy
EVs: lol who cares
Serious Nature
- Spikes
- Stealth Rock
- Pain Split
- Rapid Spin / Toxic / Toxic Spikes / Explosion / Attract / Sandstorm / Who fucking cares.
While it is most obviously a gimmick, Level 1 Pineco is an absolutely hilarious and effective lead for Hyper Offensive teams, or even defensive teams that like as many hazards on the field as humanly possible in the shortest amount of time. Pineco's access to Sturdy, all forms of hazards, and Pain Split make it one annoying son of a bitch. If the opponent has any Stealth Rock setter that isn't Rock Blast Golem or Icicle Spear Piloswine, it's most definitely going to end up losing 1v1. The goal of the set is simple: go for Stealth Rock on turn one. The opposing lead will most likely either a.) go for their own Rocks, or b.) attack you outright (some who are prepared for the set will lead with a Pokemon with Substitute, so beware of that.). Depending on the play the opponent makes on Turn 1, you either set up your last layer of hazards or Pain Split until the opponent dies. Very often, after 2 or 3 pain splits, the opponent realizes that they aren't going to make any headway, so they switch. If you are a master predict0r such as myself, you will then go for another layer of hazards. The set is very good at getting plenty of damage off on the opponent's team as they switch around to their priority abuser, allowing you to get up hazards as you please. The set itself only really needs 3 slots, so there are plenty of filler options available. The most viable is definitely Rapid Spin, allowing you to get a last ditch spin off vs. opposing hazard stackers such as lead Scolipede and Garbodor who lack Rock Blast for some reason.
This isn't all Pineco can do, however: if you are less of a risk-taker (or just hate shitty gimmicks.), you can use this set:
Pineco @ Custap Berry
Trait: Sturdy
EVs: 252 HP / 4 Atk / 252 Spe **
Jolly Nature
- Stealth Rock
- Spikes
- Rapid Spin
- Explosion
This is a much less gimmicky Pineco, but it's just as effective when used correctly. Access to all forms of hazards makes Pineco very useful to any HO team, allowing you to use the rest of your team slots to dent the opposition, instead of having 2 Pokemon for hazards. The set is simple in practice: set up layer one of hazards. The opponent may or may not attack, but that's not too much of an issue. If the opponent attacks, you are put into Custap Berry range, meaning you can set up a layer of Spikes or what have you before they can kill you off. If the opponent is an opposing hazard lead, feel free to set up another layer as they knock you down to Sturdy on Turn 2. At this point, you can spin away Rocks with priority Rapid Spin (thanks to Custap Berry) or you can finish up your stacking with a third layer. Either way, it's a very useful set best used in conjunction with a spin blocker, such as Misdreavus. Last slot is filler, again. Explosion is okay I guess.
**(the spread is variable. I run it because i just wanna get down to Custap quickly, simple as that. You could go bulkier, I suppose. Maybe enough to survive a 2 Hit Rock Blast from Golem or something, idk.)
Of course, Pineco has its flaws, such as losing outright to almost all forms of lead Golem, and being basically down 5-6 after its done its job. Other than that, it's a cool Pokemon.