Hello, good people of the Smogon RMT forums! It may be a little late, but I've recently decided to enter the world of 4th Generation competitive battling. The first team I assembled was pretty bad. For every one win I got with it, five losses would follow. However, with a few modifications it now works to great effect. Edits will be in bold.
Jirachi @ Choice Scarf
Jolly Nature
4 HP / 252 Atk / 252 Spe
-Iron Head
-Trick
-Stealth Rock
-Fire Punch
Jirachi is an excellent lead in most situations. Against most suicide leads, I use Iron Head to secure a quick 2HKO, then switch to whatever is appropriate to counter my opponent's replacement. For bulkier leads, I open with Trick, which usually cripples that Pokemon for the rest of the match, lay down Stealth Rocks on the switch, and switch out. I try to avoid having Jirachi eliminated at the start, as it functions well as a flincher later on in the match. Fire Punch allows my Jirachi to deal with Steel types later in the match, and is my main answer to SubPunch Breloom.
The lead that gives my Jirachi the most trouble are LeadApes. My main strategy is to switch to Gyarados, who has enough bulk to switch into and set up on any of LeadApe's atacks.
Gyarados @ Leftovers
Adamant Nature
156 HP / 72 Atk / 96 Def / 184 Spe
-Dragon Dance
-Waterfall
-Earthquake
-Stone Edge
Suggested by Aerrow to deal with enemy Metagross and Lucario, Gyarados represents a huge threat to my opponents. Its bulk and Intimidate allows it to come in on many physical attackers, set up, and proceed to do significant damage to the opponent's team. The bulky EV spread is to allow Gyarados to deal with LeadApe, who otherwise gives my team problems. Waterfall is for STAB and is more accurate than Aqua Tail, While QuakeEdge gives Gyara the best overall type coverage.
Vaporeon @ Leftovers
Bold Nature
188 HP / 252 Def / 68 SpD
-Wish
-Surf
-Hidden Power (Electric)
-Protect
Despite the abundance of Leftovers on my team, my Pokemon often find themselves in need of Wish support, and Vaporeon provides it. Its bulk allows it to switch in on nearly anything that isn't super-effective, where it uses Wish and Protect to regain any significant damage it may have taken, then passes a Wish to whomever needs it and can deal with the current threat. Surf gives Vaporeon a STAB move when it needs it, while HP Electric allows it to stand against opposing water types, especially Gyarados.
Due to my team becoming less and less bulky, Wish-passing is becoming extremely difficult, and I'm currently seeking a replacement for Vaporeon. I'm currently experimenting with Gengar, but any other suggestions would be appreciated.
Flygon @ Choice Scarf
Jolly Nature
252 Atk / 252 Spe / 4 SpD
-Outrage
-Earthquake
-U-Turn
-Stone Edge
Originally a Life Orber, Aerrow has suggested to make Flygon a revenge killer, and it does its job very well. Its strategy is still the same as previous: come in on a resisted hit or after another member of my team falls, and let loose with the appropriate attack. U-Turn is always the first move I use with Flygon to see if my opponent has any counters for it. Outrage and Earthquake get STAB boosts and are Flygon's primary moves, while Stone Edge takes out Zapdos as long as it doesn't carry HP Ice.
Celebi @ Leftovers
Timid Nature
32 HP / 224 Spe / 252 SpA
-Calm Mind
-Energy Ball
-Psychic
-Hidden Power (Fire)
Celebi is my team's main answer to Vaporeon and CroCune, and thanks to Natural Cure, it can also function well as a status absorber. Unlike the rest of my team, which is set up to cover each others' failings, Celebi is set to sweep. Celebi comes in on a resisted hit, uses Calm Mind, and uses whichever of its three attacks is most appropriate. I chose to run Energy Ball over Grass Knot to deal with Vaporeon without taking the loss of SpA from Leaf Storm. Psychic provides an alternate STAB and creates surprisingly good coverage alongside Grass. Hidden Power Fire is to deal with Scizor, which can dispose of Celebi with Pursuit or U-Turn. Heatran gives this Celebi the most problems, but can't kill Celebi if it decided to switch.
Heatran @ Leftovers
Timid Nature
4 SpD / 252 Spe / 252 SpA
-Fire Blast
-Earth Power
-Substitute
-Dragon Pulse
Heatran was originally a Choice Specs user, but with the recent changes to my team, I've found that a SubTran works better overall. With a Substitute to hide behind and no choice item to lock Heatran into one move, all the guesswork is removed from choosing which move to use. Fire Blast is the primary attack option, while Earth Power deals with enemy Heatran among others, and Dragon Pulse is my team's best bet against enemy Kingdra in the rain as long as I already have a sub up.
My team's current main weakness is Rain Dance Kingdra, which can outspeed and OHKO Flygon and Heatran, and there isn't much I can do to stop it if these two go down. Any suggestions on how to deal with this, as well as a replacement for Vaporeon, would be appreciated.
Jirachi @ Choice Scarf
Jolly Nature
4 HP / 252 Atk / 252 Spe
-Iron Head
-Trick
-Stealth Rock
-Fire Punch
Jirachi is an excellent lead in most situations. Against most suicide leads, I use Iron Head to secure a quick 2HKO, then switch to whatever is appropriate to counter my opponent's replacement. For bulkier leads, I open with Trick, which usually cripples that Pokemon for the rest of the match, lay down Stealth Rocks on the switch, and switch out. I try to avoid having Jirachi eliminated at the start, as it functions well as a flincher later on in the match. Fire Punch allows my Jirachi to deal with Steel types later in the match, and is my main answer to SubPunch Breloom.
The lead that gives my Jirachi the most trouble are LeadApes. My main strategy is to switch to Gyarados, who has enough bulk to switch into and set up on any of LeadApe's atacks.
Gyarados @ Leftovers
Adamant Nature
156 HP / 72 Atk / 96 Def / 184 Spe
-Dragon Dance
-Waterfall
-Earthquake
-Stone Edge
Suggested by Aerrow to deal with enemy Metagross and Lucario, Gyarados represents a huge threat to my opponents. Its bulk and Intimidate allows it to come in on many physical attackers, set up, and proceed to do significant damage to the opponent's team. The bulky EV spread is to allow Gyarados to deal with LeadApe, who otherwise gives my team problems. Waterfall is for STAB and is more accurate than Aqua Tail, While QuakeEdge gives Gyara the best overall type coverage.
Vaporeon @ Leftovers
Bold Nature
188 HP / 252 Def / 68 SpD
-Wish
-Surf
-Hidden Power (Electric)
-Protect
Despite the abundance of Leftovers on my team, my Pokemon often find themselves in need of Wish support, and Vaporeon provides it. Its bulk allows it to switch in on nearly anything that isn't super-effective, where it uses Wish and Protect to regain any significant damage it may have taken, then passes a Wish to whomever needs it and can deal with the current threat. Surf gives Vaporeon a STAB move when it needs it, while HP Electric allows it to stand against opposing water types, especially Gyarados.
Due to my team becoming less and less bulky, Wish-passing is becoming extremely difficult, and I'm currently seeking a replacement for Vaporeon. I'm currently experimenting with Gengar, but any other suggestions would be appreciated.
Flygon @ Choice Scarf
Jolly Nature
252 Atk / 252 Spe / 4 SpD
-Outrage
-Earthquake
-U-Turn
-Stone Edge
Originally a Life Orber, Aerrow has suggested to make Flygon a revenge killer, and it does its job very well. Its strategy is still the same as previous: come in on a resisted hit or after another member of my team falls, and let loose with the appropriate attack. U-Turn is always the first move I use with Flygon to see if my opponent has any counters for it. Outrage and Earthquake get STAB boosts and are Flygon's primary moves, while Stone Edge takes out Zapdos as long as it doesn't carry HP Ice.
Celebi @ Leftovers
Timid Nature
32 HP / 224 Spe / 252 SpA
-Calm Mind
-Energy Ball
-Psychic
-Hidden Power (Fire)
Celebi is my team's main answer to Vaporeon and CroCune, and thanks to Natural Cure, it can also function well as a status absorber. Unlike the rest of my team, which is set up to cover each others' failings, Celebi is set to sweep. Celebi comes in on a resisted hit, uses Calm Mind, and uses whichever of its three attacks is most appropriate. I chose to run Energy Ball over Grass Knot to deal with Vaporeon without taking the loss of SpA from Leaf Storm. Psychic provides an alternate STAB and creates surprisingly good coverage alongside Grass. Hidden Power Fire is to deal with Scizor, which can dispose of Celebi with Pursuit or U-Turn. Heatran gives this Celebi the most problems, but can't kill Celebi if it decided to switch.
Heatran @ Leftovers
Timid Nature
4 SpD / 252 Spe / 252 SpA
-Fire Blast
-Earth Power
-Substitute
-Dragon Pulse
Heatran was originally a Choice Specs user, but with the recent changes to my team, I've found that a SubTran works better overall. With a Substitute to hide behind and no choice item to lock Heatran into one move, all the guesswork is removed from choosing which move to use. Fire Blast is the primary attack option, while Earth Power deals with enemy Heatran among others, and Dragon Pulse is my team's best bet against enemy Kingdra in the rain as long as I already have a sub up.
My team's current main weakness is Rain Dance Kingdra, which can outspeed and OHKO Flygon and Heatran, and there isn't much I can do to stop it if these two go down. Any suggestions on how to deal with this, as well as a replacement for Vaporeon, would be appreciated.