
Infernape (Jim Raynor)
Nature: Naive
Item: Focus Sash
EVs: 72 Atk/184 SpAtk/252 Spd
Moves:
- Protect
- Fake Out
- Heat Wave
- Close Combat

Metagross (Fenix)
Nature: Adamant
Item: Heat Rock
EVs: 252 HP/6 Atk/252 Def
Moves:
- Sunny Day
- Earthquake
- Bullet Punch
- Explosion

Exeggutor (Kerrigan)
Nature: Modest
Item: Occa Berry
EVs: 252 HP/156 Def/100 Spd
Moves:
- Psychic
- Solarbeam
- Sleep Powder
- Protect

Groudon (Gen. Duke)
Nature: Adamant
Item: Lum Berry
EVs: 6 HP/252 Atk/252 Spd
Moves:
- Earthquake
- Rock Slide
- Fire Punch
- Rock Polish

Mewtwo (Zeratul)
Nature: Modest
Item: Expert Belt
EVs: 6 HP/252 Spd/252 SpAtk
Moves:
- Fire Blast
- Aura Sphere
- Blizzard
- Thunderbolt

Cresselia (Raszagal)
Nature: Bold
Item: Light Clay
EVs: 252 HP/156 Def/100 SpDef
Moves:
- Light Screen
- Moonlight
- Toxic
- Helping Hand
Seeing as how you have to have 6 Pokemon then choose 4 of those, I decided to put down all 6.
The idea is to have Infernape Fake Out threats that may try to set up on the first turn (Trick Room, etc.) while Metagross sets up the sun. I opted to not use Groudon to set up sun on the lead because I don't want to have to slow down Groudon to set it up over Kyogre or Rayquaza.
From there, I assess the threat level. I can choose to either Bullet Punch with Metagross while Infernape uses Heat Wave/Close Combat, or I can have Infernape Protect while Metagross uses Earthquake. Focus Sash allows Infernape to survive enemy water or ground attacks for at least 1 hit. At some point, I'll explode Metagross on a Protect.
I expect Infernape to fall first, which leads to the Exeggutor switch-in. With the given EVs in the sun, I'll be able to outspeed quite a bit of threats. If Metagross is about to go down, I'll Protect Exeggutor and explode with Metagross at this point.
Groudon is the secondary set up for sun. Exeggutor should attract a lot of fire attacks, so hopefully I can get off a Rock Polish under while the foe targets Exeggutor. At that point, Groudon is outspeeding pretty much everything and spamming Rock Slide or STAB EQ. Fire Punch is there for boosted power under sun.
Mewtwo can be replace Groudon instead if I want a Special Attacker instead. Cresselia is sort of a wild card that can stall while helping out the primary attacker.
Any suggestions? This is sort of my first VGC team I've ever made, so comments and suggestions would be much apprectiated.