Hello Smogon! I'm pretty new to competitive battling, but I have created a team that has given me a respectable bit of success. But enough with the babbling. Let's talk about the team:
The basic strategy is to identify and eliminate or cripple certain key threats in order to allow Chandelure, Landorus, or Breloom to sweep.
Chandelure @ choice specs
Flash Fire
Timid, 252 SpA, 252 Spe, 4 Spdef
-Fire blast
-Shadow ball
-Energy ball
-Hidden power fighting
This guy is my main special sweeper. With a choice specs on an already massive special attack stat, Chandelure can rip enormous holes in the opponent's team. Fire blast and Shadow ball are the standard dual-STABs, Energy ball hits water types that would otherwise wall Chandelure, and HP fighting can get a bit of damage if I predict a switch into Blissey or Heatran. Chandelure's semi-low speed means I take Timid nature to outspeed other base 80 pokemon. With Thunder wave support from Latias, Chandelure can outpseed a significant portion of the meta-game. 3 immunities also give me many chances to switch in, but a weakness to stealth rock means I won't be bringing out this guy until late game.
Landorus @ choice scarf
Sand force
Naughty, 252 Atk, 252 Spe, 4 SpA
-Earthquake
-Stone edge
-U turn
-Hidden power ice
Landorus is my fast physical sweeper/revenge killer. HP ice gives me something against dragons, Gliscor, and opposing Landorus, U-turn is an amazing scouting tool, and Earthquake and Stone edge give me the standard quake-edge coverage. Unfortunately, Landorus has a horrible weakness to ice, so I'm looking for another physical revenge killer (possibly Terrakion or Scizor?). Generally, Gastrodon can absorb many of the attacks aimed at Landorus, such as Ice beam or Hydro pump.
Breloom @ toxic orb
Poison Heal
Adamant, 244 Atk, 252 Spe, 12 HP
-Spore
-Substitute
-Focus punch
-Seed bomb
Standard subpunching Breloom. I can switch into a slow, non-threatening pokemon like Ferrothorn or Blissey, use Spore, and Substitute on the switch. From there, I'll probably be spamming the Focus punch button. Adamant gives Focus punch maximum power at the cost of speed. Unfortunately, Breloom's defenses aren't that great, so I stray away from switching into any source of damage. Sometimes, I may paralyze opposing threats with Latias. Unfortunately, this prevents Breloom from inducing sleep, but it allows him to set up a substitute before the opponent and maybe still get a hit in.
Latias @ leftovers
Levitate
Modest, 252 HP, 252 Spe, 4 SpA
-Thunder wave
-Dragon pulse
-Wish
-Protect
Latias is my fast support/special wall. Her several resistances allow her many chances to switch in and paralyze something with Thunder wave. Wish and Protect let me heal other teammates or stall out special attackers. Dragon pulse and a Modest nature gives Latias some striking power, enough to OHKO a Gengar with some previous damage. If a grass type like Venusaur comes in to threaten Gastrodon, Latias will be my go-to solution. Unfortunately, I really don't have much on my team to take a Shadow ball or Dark pulse that would be aimed at Latias. My best bet would be to switch into Gastrodon.
Skarmory @ leftovers
Sturdy
Careful, 252 HP, 228 Def, 28 Spe
-Roost
-Stealth rock
-Brave bird
-Whirlwind
Skarmory is my physical wall. Steel/Flying is an awesome typing, and its weaknesses can be sufficiently negated with Chandelure or Gastrodon. Stealth rock and Whirlwind can help me rack up a bit of damage, allowing for a clean sweep by one of my attackers. Careful allows me a bit of a buffer to Draco meteor. 28 Speed EVs allows me to outspeed opposing Skarmory and maybe get in Stealth rock or Roost before I get taunted.
Gastrodon @ leftovers
Storm Drain
Calm, 252 HP, 252 Spdef, 4 SpA
-Protect
-Recover
-Hidden power electric
-Scald
Gastrodon is my specially oriented tank. His typing enables him to check an extremely large number of threats to my team, including Starmie and Rotom-W. Protect helps me scout for the random HP grass on pokemon such as Politoed. Scald is my standard water STAB, and its burn can help soften physical hits as well. HP electric might seem a bit weird, but it allows me to damage many of the threats Gastrodon is intended to counter, such as opposing bulky waters. Even if I get tricked a choice specs, Gastrodon has a high enough base special attack to become a pseudo-special attacker.
Threats:
While I haven't been able to go against everything in the OU meta-game, I have a good idea of what my team is strong against, and what it is weak against. The shaky specially defensive core of Gastrodon and Latias does have some weaknesses, with the most common one most likely being Gengar. Shadow ball is a real pain, and I may end up having to sack something to give my Landorus a safe switch in. My team also doesn't have much against stall teams, since nothing has rapid spin or any boosting move. Another significant problem is my weakness to ice. Latias, Landorus, and Breloom are all weak to ice, and my only resistance is in the frail Chandelure, which doesn't help.
The team:
The basic strategy is to identify and eliminate or cripple certain key threats in order to allow Chandelure, Landorus, or Breloom to sweep.
Chandelure @ choice specs
Flash Fire
Timid, 252 SpA, 252 Spe, 4 Spdef
-Fire blast
-Shadow ball
-Energy ball
-Hidden power fighting
This guy is my main special sweeper. With a choice specs on an already massive special attack stat, Chandelure can rip enormous holes in the opponent's team. Fire blast and Shadow ball are the standard dual-STABs, Energy ball hits water types that would otherwise wall Chandelure, and HP fighting can get a bit of damage if I predict a switch into Blissey or Heatran. Chandelure's semi-low speed means I take Timid nature to outspeed other base 80 pokemon. With Thunder wave support from Latias, Chandelure can outpseed a significant portion of the meta-game. 3 immunities also give me many chances to switch in, but a weakness to stealth rock means I won't be bringing out this guy until late game.
Landorus @ choice scarf
Sand force
Naughty, 252 Atk, 252 Spe, 4 SpA
-Earthquake
-Stone edge
-U turn
-Hidden power ice
Landorus is my fast physical sweeper/revenge killer. HP ice gives me something against dragons, Gliscor, and opposing Landorus, U-turn is an amazing scouting tool, and Earthquake and Stone edge give me the standard quake-edge coverage. Unfortunately, Landorus has a horrible weakness to ice, so I'm looking for another physical revenge killer (possibly Terrakion or Scizor?). Generally, Gastrodon can absorb many of the attacks aimed at Landorus, such as Ice beam or Hydro pump.
Breloom @ toxic orb
Poison Heal
Adamant, 244 Atk, 252 Spe, 12 HP
-Spore
-Substitute
-Focus punch
-Seed bomb
Standard subpunching Breloom. I can switch into a slow, non-threatening pokemon like Ferrothorn or Blissey, use Spore, and Substitute on the switch. From there, I'll probably be spamming the Focus punch button. Adamant gives Focus punch maximum power at the cost of speed. Unfortunately, Breloom's defenses aren't that great, so I stray away from switching into any source of damage. Sometimes, I may paralyze opposing threats with Latias. Unfortunately, this prevents Breloom from inducing sleep, but it allows him to set up a substitute before the opponent and maybe still get a hit in.
Latias @ leftovers
Levitate
Modest, 252 HP, 252 Spe, 4 SpA
-Thunder wave
-Dragon pulse
-Wish
-Protect
Latias is my fast support/special wall. Her several resistances allow her many chances to switch in and paralyze something with Thunder wave. Wish and Protect let me heal other teammates or stall out special attackers. Dragon pulse and a Modest nature gives Latias some striking power, enough to OHKO a Gengar with some previous damage. If a grass type like Venusaur comes in to threaten Gastrodon, Latias will be my go-to solution. Unfortunately, I really don't have much on my team to take a Shadow ball or Dark pulse that would be aimed at Latias. My best bet would be to switch into Gastrodon.
Skarmory @ leftovers
Sturdy
Careful, 252 HP, 228 Def, 28 Spe
-Roost
-Stealth rock
-Brave bird
-Whirlwind
Skarmory is my physical wall. Steel/Flying is an awesome typing, and its weaknesses can be sufficiently negated with Chandelure or Gastrodon. Stealth rock and Whirlwind can help me rack up a bit of damage, allowing for a clean sweep by one of my attackers. Careful allows me a bit of a buffer to Draco meteor. 28 Speed EVs allows me to outspeed opposing Skarmory and maybe get in Stealth rock or Roost before I get taunted.
Gastrodon @ leftovers
Storm Drain
Calm, 252 HP, 252 Spdef, 4 SpA
-Protect
-Recover
-Hidden power electric
-Scald
Gastrodon is my specially oriented tank. His typing enables him to check an extremely large number of threats to my team, including Starmie and Rotom-W. Protect helps me scout for the random HP grass on pokemon such as Politoed. Scald is my standard water STAB, and its burn can help soften physical hits as well. HP electric might seem a bit weird, but it allows me to damage many of the threats Gastrodon is intended to counter, such as opposing bulky waters. Even if I get tricked a choice specs, Gastrodon has a high enough base special attack to become a pseudo-special attacker.
Threats:
While I haven't been able to go against everything in the OU meta-game, I have a good idea of what my team is strong against, and what it is weak against. The shaky specially defensive core of Gastrodon and Latias does have some weaknesses, with the most common one most likely being Gengar. Shadow ball is a real pain, and I may end up having to sack something to give my Landorus a safe switch in. My team also doesn't have much against stall teams, since nothing has rapid spin or any boosting move. Another significant problem is my weakness to ice. Latias, Landorus, and Breloom are all weak to ice, and my only resistance is in the frail Chandelure, which doesn't help.