Hey there, I'm about to show you the team I just made. But before that, I want to let you know that this is a Beginner team. My experience is limited to a couple months of play on Netbattle during Generation III. I have never played D/P. Now, onto the important part.
This is my team - The idea was to counter common leads and carry that advantage to stay one step ahead, defensively. After my first team(s) I decided to try to counter, or at least deal with the Pokemon giving me the most trouble.
Starmie@Life Orb [Timid]
4 HP/252 SpA/252 Spe
Hydro Pump
Thunderbolt
Grass Knot
Rapid Spin
Timid Hydro Pump OHKO's Hippowdon. Modest Surf does not. This set is designed to counter most leads, although it does little in the way of spiking or weather effects as most standard leads do. This is why we use...
Nidoqueen @Leftovers [Impish]
252 Def/252 HP/4 Atk
Toxic Spikes
Stealth Rock
Earthquake
Roar
Switches in on Thunderbolts aimed at Starmie. Roars away Subbers, Dancers, Bellies, etc. Sets up Stealth Rock and Toxic Spikes. Often expected to be a sweeper and thus walls are usually switched in. Other times Foretress is sent in as well.
Magnezone@Leftovers [Timid]
220 Spe/252 SpA/36 HP
Thunderbolt
Hidden Power:Fire
Magnet Rise
Substitute
Counter for Agility-less Metagross, Skarmory, Foretress, Bronzong, Steelix, etc. Scizor, I've learned, is best left to Weezing. This Magnezone isn't a one trick pony however, I've taken down sweeping Gengars and Infernapes with careful planning.
Lucario@Life Orb [Jolly]
252 Atk/252 Spe/4 Def
Swords Dance
Cross Chop
ExtremeSpeed
Stone Edge
I like this Lucario set but he gets countered so often and my team has enoughtrouble with Focus Blast Gengar as is. Regardless, He has done some impressive sweeping so far. I've learned it's best to switch him on after losing a poke due to his offensive nature and weak typing defensively.
Weezing @Leftovers [Bold]
252 HP/252 Def/4SpA
Fire Blast
Thunderbolt
Pain Split
Will-O-Wisp
I love this Weezing. He is easy to switch in on most physical sweepers, being immune to everyone's favorite physical attack, Earthquake. Zen Headbutt often causes trouble, however. Also I think Will-O-Wisp is bugged or something, It only hits about 1/3 of the time which is very frustrating when used on Lucario or Scizor. (Especially when I could have just Fire Blasted instead)
Blissey@Leftovers [Calm]
252 Def/68 HP/188 SpD
Aromatherapy
Thunder Wave
Seismic Toss
Softboiled
Standard Cleric Blissey. Not much to say other than she likes getting killed ghosts, which my team is already quite weak against. Still a great Special Wall. Generally Weezing can deal with Blissey's threats including Infernape, Lucario, Heracross, Electivire and so on by spreading Will-o-wisp or KO'ing with Fire Blast. Often I will switch Blissey in after one of my others has been afflicted with status problems. I usually Thunder Wave before using Aromatherapy as they are immediately expecting.
Well, that is it. I think this one is fairly flexible. My last team was a Baton Pass/Very Offensive sweeping based one, which I may post after a few tweaks.
Let me know of any big changes that should be made, and perhaps throw some tips on how to deal with Gengar.






This is my team - The idea was to counter common leads and carry that advantage to stay one step ahead, defensively. After my first team(s) I decided to try to counter, or at least deal with the Pokemon giving me the most trouble.

Starmie@Life Orb [Timid]
4 HP/252 SpA/252 Spe
Hydro Pump
Thunderbolt
Grass Knot
Rapid Spin
Timid Hydro Pump OHKO's Hippowdon. Modest Surf does not. This set is designed to counter most leads, although it does little in the way of spiking or weather effects as most standard leads do. This is why we use...

Nidoqueen @Leftovers [Impish]
252 Def/252 HP/4 Atk
Toxic Spikes
Stealth Rock
Earthquake
Roar
Switches in on Thunderbolts aimed at Starmie. Roars away Subbers, Dancers, Bellies, etc. Sets up Stealth Rock and Toxic Spikes. Often expected to be a sweeper and thus walls are usually switched in. Other times Foretress is sent in as well.

Magnezone@Leftovers [Timid]
220 Spe/252 SpA/36 HP
Thunderbolt
Hidden Power:Fire
Magnet Rise
Substitute
Counter for Agility-less Metagross, Skarmory, Foretress, Bronzong, Steelix, etc. Scizor, I've learned, is best left to Weezing. This Magnezone isn't a one trick pony however, I've taken down sweeping Gengars and Infernapes with careful planning.

Lucario@Life Orb [Jolly]
252 Atk/252 Spe/4 Def
Swords Dance
Cross Chop
ExtremeSpeed
Stone Edge
I like this Lucario set but he gets countered so often and my team has enoughtrouble with Focus Blast Gengar as is. Regardless, He has done some impressive sweeping so far. I've learned it's best to switch him on after losing a poke due to his offensive nature and weak typing defensively.

Weezing @Leftovers [Bold]
252 HP/252 Def/4SpA
Fire Blast
Thunderbolt
Pain Split
Will-O-Wisp
I love this Weezing. He is easy to switch in on most physical sweepers, being immune to everyone's favorite physical attack, Earthquake. Zen Headbutt often causes trouble, however. Also I think Will-O-Wisp is bugged or something, It only hits about 1/3 of the time which is very frustrating when used on Lucario or Scizor. (Especially when I could have just Fire Blasted instead)

Blissey@Leftovers [Calm]
252 Def/68 HP/188 SpD
Aromatherapy
Thunder Wave
Seismic Toss
Softboiled
Standard Cleric Blissey. Not much to say other than she likes getting killed ghosts, which my team is already quite weak against. Still a great Special Wall. Generally Weezing can deal with Blissey's threats including Infernape, Lucario, Heracross, Electivire and so on by spreading Will-o-wisp or KO'ing with Fire Blast. Often I will switch Blissey in after one of my others has been afflicted with status problems. I usually Thunder Wave before using Aromatherapy as they are immediately expecting.

Well, that is it. I think this one is fairly flexible. My last team was a Baton Pass/Very Offensive sweeping based one, which I may post after a few tweaks.
Let me know of any big changes that should be made, and perhaps throw some tips on how to deal with Gengar.