Help My Netbattle Team

[Lion Heart]

Okay, the deal is I have a Netbattle team, and though I think it is pretty good, I lose alot with it.
So, I'm posting it here, so that someone can help me out to make it better.

Swampert@Lum Berry
Nature: Sassy, 255 ATK, 255 SP.DEF
-Earthquake
-Ice Beam
-Mirror Coat
-Surf

Crobat@Lum Berry
Nature: Hasty, 255 ATK, 255 SPD
-Sludge Bomb
-Aerial Ace
-Confuse Ray
-Shadow Ball

Medicham@Lum Berry
Nature: Adamant, 255 ATK, 255 SPD
-Brick Break
-Shadow Ball
-Bulk Up
-Substitute

Charizard@Lum Berry
Nature: Hasty, 255 ATK, 255 SP.ATK
-Earthquake
-Heat Wave
-Hidden Power (Ice)
-Swords Dance

Scizor@Lum Berry
Nature: Naughty, 255 ATK, 255 SPD
-Quick Attack
-Return
-Silver Wind
-Steel Wind

Venusaur@Lum Berry
Nature: Gentle, 255 SP.ATK, 255 SPD
-Synthesis
-Leech Seed
-Toxic
-Giga Drain

Well that's the team, I personally think it's pretty good, but I've been losing a fair bit so any help would be appreciated.

 

[Kholdstaire]

ROFL

Oh god, you want to talk 'ish about Toothache's team, and you don't even know how to spread EVs. Please, look at the Battledex thing ._.

Anyway, Sceptile and Raikou rape this team.

 

[Shuckle]

Raikou tends to rape whatever it can get its dirty, HIV positive hands on. ._.

 

[Spike Razzor]

Raikou tends to rape whatever it can get its dirty, HIV positive hands on. ._.

*Saves* lol, thats one for the record.