Minun
What I consider to be my mascot Pokemon, so I absolutely had to bring it along. Minun was part of the Plus/Minus setup, and in fact was the Pokemon to inspire it.
Unfortunately, even though I will use Minun if I ever get the excuse, I really don't know how to use one well. Iron Ball was from an idea to Fling it at opponents, but I didn't realize that it only did damage. I assumed it actually would replace the opponent's item with the Iron Ball, allowing Grass Knot to do more damage, and slowing down big threats like Electivire. Minun was a great support Pokemon, but couldn't attack to save its life.
Manetric
Easily the central and most important member of my team. Manetric was a quick attacker, mainly using Flamethrower, but picking up a kill and attacking another opponent with Snarl. Swagger was mostly because I really didn't know what else to put on a Special Manetric, and I used it against Electivire for a bit before I realized that was a stupid idea.
As part of the Plus/Minus core of the team, Manetric spend a lot of the time as just Manetric. But, once an Electivire came out, or her partner fainted, she got to be Mega Manetric, using the Intimidate ability to lower the opponents chances of sweeping.
Ampharos
The third member of the Plus/Minus core, and was a more offensive support as supposed to just support like Minun was. Magnetic Flux was what I initially brought it along for, and it did get some use, but for the most part, Ampharos was a second attacker to try to get opposing threats such as Electivire down. Occasionally, Ampharos was able to Mega-Evolve, but it was more to increase her power rather than any particular reason to do so. A lot of opponents brought ice-type moves to use against Mega Ampharos.
Pikachu
Can't have a Pikachu Cup without Pikachu! Honestly, I didn't expect much of it, and wouldn't have used it at all if it weren't for the chance of getting a special prize if it was one of the top three Pokemon this tournament. Pikachu came into every battle, and honestly surprised me. Maybe my opponents weren't EV training or IV breeding their Pokemon like I did, but despite having no defensive EVs aside from a measly 4 HP, it survived a lot of attacks. I don't think it singlehandedly won any battles, but it certainly took some hits and dealt some damage.
Rotom (Lawnmower)
After I filled up my must-brings, I chose the last two of my team based on what I thought might do good. I don't like Rotom all that much, but since its signature Leaf Storm was good against Lanturn, Stunfisk and Water-type Rotom, I thought it'd be a good idea to bring one along. It did really good, although it wasn't brought into that many battles.
Luxray
Again, based more on strategy than what I actually like. Although, Luxray is one of the few fourth-gen Pokemon I'll admit to liking a bit. I noticed that the only physical attacker on my team was the lackluster Pikachu, and since I don't have a safe way to trade with myself at the moment, Electivire was out of the question. So, Luxray it was, and it was a pretty good choice. Ice Fang was good against enemy Ampharos and Stunfisk. Crunch was a pretty solid move that was neutral on almost everything. Intimidate allowed it to switch into Electivire and take its attack down a notch, and the Air Balloon made it so Electivire and Stunfisk had to either spend an extra turn attacking it, or have it's partner waste a move and popping the balloon.
Manetric/Minun/Pikachu/Luxray(Unused) vs. Emolga/Pikachu/Electivire/Ampheros
4DLG-WWWW-WW2L-3UUT
The opponent clearly had no idea how Fake Out worked, but it allowed a good demonstration for how my basic team worked. Minus boost from the very beginning, with Minun helping out. I swapped out Manetric for Pikachu to sacrifice the rodent to get Luxray out unharmed, but Pikachu really worked well on its own. In the end, Minun fainted and I brought Manetric out for it's second role: Intimidator.
Manetric/Minun/Pikachu(Unused)/Rotom vs. Electivire/Eelectross/Ampheros/Lanturn
BEGG-WWWW-WW2L-3VXH
I really got to hate Electivire/Eelectross leads over the course of this tournament. Fortunately, this one worked out alright. Here I used a Swagger strategy that I later modified, then abandoned as the tournament went on. Everyone got a chance to shine in this battle and it was really close. I admit I got a lot lucky, though.
Manetric/Ampheros/Pikachu/Luxray vs. Pikachu/Eelectross/Electivire/Rotom
4BBG-WWWW-WW2L-3V3J
This one I'm particularly proud of. I was attempting to set up Magnetic Flux with Ampharos as per usual, and my opponent was able to completely shut down that strategy. Practically everything I tried to do, my opponent had an answer for, and the fact that I won, fairly well at that, makes me proud. Also, this has another time I intended to sacrifice Pikachu and it showed me that Pikachus aren't as weak as I expect them to be.
Manetric/Ampharos/Pikachu/Rotom vs. Emolga/Electivire/Rotom/Lanturn
KGVW-WWWW-WW2L-3V6J
This is one where my opponent played well, but I still beat them. I was actually considering bringing Luxray instead of Rotom to ensure the Electivire went down, but decided to use Rotom because they had at least the two water-types on their team preview. Really glad I chose to do that, since I probably would have lost otherwise.
Manetric/Minun/Pikachu/Luxray vs. Eelectric/Pikachu/Manetric/Luxray
YR5W-WWWW-WW2L-3V94
Okay, I mostly saved this one because of the fact that this was nearly a mirror match. I had just been watching the VGC Worlds (where most people have permutations of the exact same team), so having that happen to me was pretty entertaining.
Manetric/Ampharos/Pikachu/Luxray vs. Manetric/Stunfisk/Pikachu/Electivire
WMKW-WWWW-WW2L-3VAC
I had been on a rediculous losing streak right before this one, so I clearly wasn't fighting the best of opponents. Shows off my Magnetic Flux strategy really well, though. And seriously, why ddi they bring both Stunfisk and Electivire, but not use any Ground-type moves?
Overall, had fun, although my team didn't to the best. But really, the only thing that truly mattered was that I used Pikachu in 45 battles. I did my part to unlock the Endeavor Pikachu prize, and hopefully I won't just end up with a Light Ball for my troubles. Still, being able to use Minun in any serious way was fun.