Well if no one will make a big post about everyone's favorite Grass/Electric non-Lawnmower Pokemon, I guess I can do a little contribution.
Caribolt @ Zap Plate
Ability: Galvanize
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Return / Frustration / Double-Edge
- Power Whip / Horn Leech
- Swords Dance
- Quick Attack
Obviously Caribolt's best set (at this point in time) is a standard SD set. It's crazy how much Caribolt can break through at +2. I can post some exact calcs further along the line, but under Electric Terrain at 2, this thing does 70% to Tangrowth, which is absolutely shocking. I've often described this mon as Mega Pinsir with an item, and it's clear to see that this mon is making a big statement very early on in its lifetime. The EVs are obviously maxed for Attack and Speed, and the moves are pretty straightforward in terms of powerful STAB and everything. The best way for this thing to set up is often behind the screens set up by Dual Screens Koko, and from there it can proceed to wreak havoc on the meta. One thing aobut this set is that I really recommend Power Whip over Horn Leech on this set simply because the set is best suited for HO. Power Whip gets some nice KOs that Horn Leech misses out on. Of course, if you're more conservative
Play Balance use Horn Leech. If you're using Double Edge, you HAVE to run Horn Leech so that you don't have a dead elk after two turns (personally I haven't used the DE/HornLeech set but it sounds dope and you should definitely try it)
Obviously the main core this thing is currently seeing usage in is a Cari/Koko/Lucha core, as both sweepers take great advantage of Koko's screens. However, one thing that I feel is really relevant is that Caribolt also is able to beat most of the components of this core as well. Quick Attack under opposing Lucha's terrain is a great way to revenge kill Lucha and I find that this mon is really of them most consistent stops for Lucha aside from Tomohawk. Frankly, I expect Caribolt to be the reason we see a rise in Lele/Lucha cores just so Caribolt can't abuse the electric terrain.
Caribolt @ Normalium Z
Ability: Galvanize
EVs: 252 Atk / 4 SpA / 252 Spe
Naive Nature
- Boomburst
- Horn Leech
- Celebrate
- Quick Attack
Another fun set that I've seen make a big dent in almost any team is Z-Celebrate Caribolt, which can do just as much damage via Boomburst even without terrain. I can't fid the calcs at the moments, but +1 Boomburst from Caribolt comes VERY close to 2HKOing Mega Latias. I suppose you could also throw Knock Off on there as well, but then again, you lose the priority and/or STAB that this set really enjoys. I suppose you may be able to use Giga Drain over Horn Leech, though that mostly comes down to how much you fear intimidate.
Caribolt @ Choice Band
Ability: Galvanize
Happiness: 0
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Frustration
- Horn Leech / Power Whip
- Quick Attack
- Knock Off / Volt Switch
Not gonna lie, I haven't used this set at all, but this set takes advantage of Caribolt's nice Base 106 attack. It also is a nice user of Knock Off here, which does do some nice damage to Defensive Kitsunoh *cough*iFeedback*cough) among other things. Horn Leech comes before Power Whip here simply because I REALLY like the recovery and therefore longevity it gives, though I can understand wanting raw power. I slashed Volt Switch here just so that Caribolt does have an opportunity to switch if necessary, though I think Knock Off is better in almost every situation. OBviously, this thing really really likes having Terrain, but that should be a given.
Partners are kind of obvious as it stands: Koko and Lucha are fun and pretty beneficial for providing support and clearing a few potent threats. One thing I do think could be kind of fun is doing a double Grass with Bulu since you also take less damage from any ground types directed towards Caribolt, and Caribolt can deal with common flying types Tomohawk, Lucha, and Torny-T. Mainly though things that can't really handle bulky Waters and Ground types, like Tran and even Smok. You're definitely going to want something that beats Cawmodore too since Caw shut down both of this mon's STABs.
Closing thoughts, Caribolt could also maybe run a Specs set with Boomburst (and go the Exploud route), Giga Drain, HP Ice and Volt Switch, and it could also maybe do some dumb stuff like a bulky RestTalk set with some passable 84/82/80 bulk, though I'm not sure if that's REALLY the best way to use a Caribolt. Body Slam is also a cool option if you want to try to have Para chances, though you lose quite a bit of power in the long run so idk if it's worth it.
Hope this is something you all can use and abuse, and here's to a great playtest tour!