ScarfZard
Charizard @ Choice Scarf
Solar Power
4 HP/ 252 SpA/ 252 Spe
Timid Nature
-Fire Blast/ Flamethrower
-Focus Blast
-Air Slash
-Solar Beam
Usage: The main idea of this set is to catch opponents off guard. Since most Charizards Meg Evolve, they usually have 328 speed. Scarfed Charizard has 492 speed and 476 special attack when sun is up. Charizard can OHKO 4/0 Greninja with focus blast or solar beam, OHKO 252/4 Azumarill with solar beam (although azumarill 2HKOs with Aqua Jet in sun), has a chance to OHKO 252/4 Heatran with focus blast, OHKO 4/0 Keldeo...you get the idea. The only thing charizard has to worry about is other Scarf users. And rocks, of course.
Other Options: This set is obviously meant to be used in the sun. It's power is severely weakened and it loses Solar Beam if you try to use this guy outside of sun. In terms of moves, Brick Break can be used to 2HKO Blissey. Dragon Pulse can also be used instead of a move on this set, but finding a move to give up is tough, since Dragon Pulse has terrible coverage.
Watch Out For...: Anything Scarfed.
Offensive Sylveon
Sylveon @ Leftovers
Pixilate
4 HP/ 252 Def/ 252 SpA
Bold Nature
-Hyper Beam
-Wish
-Protect
-Toxic/Calm Mind
Usage: Your probably thinking Hyper Beam? 252 Def Bold Nature? Dafuq? You would never expect that in a battle, which is what makes this set so fantastic. You can play around with the EV spread and pick one that bests suits your play style. The idea is to be able to take at least one hit and retaliate with a dangerous Hyper Beam. Sylveon's SpD is good enough as is. Just make sure you understand: This set isn't meant to sweep, it's meant to catch an opponent off guard and kill something that the rest of your team will struggle with. Wish and Protect are just for healing, should you get the chance. Toxic can be used to wear down Special walls, or Calm Mind can be used to become a Special Tank.
Other Options: You can run Life Orb instead of leftovers for extra damage. As I said before, you can play around with the EVs to best fit your style. I don't recommend changing things up too much, because Sylveon only needs to get off one attack for massive damage. You just want to make sure it can survive to use the attack, since Sylveon is slow. If you feel like Sylveon isn't doing enough damage, give it a Modest nature.
Watch Out For...: Steel, Fire, and Poison types. Hyper Beam doesn't work at all on the pkoemon that resist it. In addition, Steel and Poison types are immune to Toxic. Infernape and Lucario will want to watch out, however, because Hyper Beam OHKOs them.
Defensive Aegislash
Aegislash @ Chesto Berry
Stance Change
252 Hp/ 4 SpA (or Atk, if using a Physical move)/ 252 SpD
Careful Nature
-Rest
-King's Shield
-Toxic
-Shadow Ball/ Iron Head
Usage: Once again, this set is meant to catch your foe off guard. Aegislash's 50/150/150 defenses are nothing to laugh at. On top of that, Aegislash is immune to Poison (and therefore Toxic) and Fighting moves.
Other Options: Their aren't many. You could try RestTalk and give Aegislash an Air Balloon or Leftovers
Watch Out For...: Well, Aegislash is built for offense. This set is meant to catch your opponent off guard. You'll only get one or two attacks before they realize what's going on. Once they do, this Aegislash set becomes pretty much useless.
Oh dear I'm tired. I think I'll stop now. Feel free to tell me what you think of these sets, and report me if I did something I'm not supposed to.