Planned Pokémon Team (Advice Needed)

[MrTripStack]

Hello, everyone! Let me start by saying that my actual name is Kenny but you are more than welcomed to call me by my username, MrTripStack (or even "Trip", for short). I've been playing Pokémon games since I was a young child, but I've never thought of the games in a competitive standpoint.

I've never been much of a competitive player, in any type of video game, but I wouldn't mind having a decent team and being able to do a few occasional matches. I've been looking into EV training lately and I've been thinking about creating my first team, and here are the plans I've come up with so far.

Besides Blissey, these are only plans for now and are subject to change. I thought now would be the best time to ask for any advice, before any training or breeding would have to go to waste.

Pokémon: Blissey
Role: Mixed Tank

Spoiler:

Blissey (F) @ Leftovers
Trait: Serene Grace
EVs: 252 HP / 252 Def / 4 Spe
Bold Nature [+Def/-Atk]
~ Flamethrower
~ Stealth Rock
~ Toxic
~ Softboiled

I plan to normally lead with Blissey, to be able to get Stealth Rock onto the field as soon as possible. Toxic and Softboiled are here to stall for the poison damage, and Flamethrower is here for the sake of overall type-coverage within the team.

Pokémon: Carracosta
Role: Mixed Tank

Spoiler:

Carracosta (M) @ Leftovers
Trait: Solid Rock
EVs: 4 Atk / 252 Def / 252 SpD
Careful Nature [+SpD/-SpA]
~ AncientPower
~ Iron Defense
~ Ice Beam
~ Surf

I kept Surf on Carracosta because it's a strong water attack and so I'll be able to still get around with this team (in-game, that is). Ice Beam is for the sake of overall type-coverage within this team.

Pokémon: Krookodile
Role: Physical Sweeper

Spoiler:

Krookodile (M) @ ?
Trait: Moxie
EVs: 4 HP / 252 Atk / 252 Spe
Adament Nature [+Atk/-SpA]
~ Crunch
~ Brick Break
~ Earthquake
~ Stone Edge

Cunch and Earthquake both take advantage of Krookodile's STAB and Brick Break is for a bit more coverage. Stone Edge, on the other hand, is for the sake of overall type-coverage within this team.

Pokémon: Salamence
Role: Physical Sweeper

Spoiler:

Salamence (M) @ Lum Berry
Trait: Moxie
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature [+Spe/-SpA]
~ Dragon Claw
~ Fly
~ Outrage
~ Dragon Dance

Dragon Claw and Outrage both take advantage of Salamence's STAB, while Dragon Dance is used to raise his Attack and Speed stats. I'm trying to keep Fly so I'll still be able to get around (in-game, that is), and it's a pretty strong physical attack.

Pokémon: Lucario
Role: Special Sweeper

Spoiler:

Lucario (M) @ Wise Glasses
Trait: Inner Focus
EVs: 4 HP / 252 Atk / 252 Spe
Timid Nature [+Spe/-Atk]
~ Aura Sphere
~ Dark Pulse
~ Dragon Pulse
~ Nasty Plot

Aura Sphere takes advantage of Lucario's STAB and Nasty Plot will raise his Attack Stat. Dark Pulse and Dragon Pulse are used for some extra type-coverage.

Pokémon: Gengar
Role: Special Sweeper

Spoiler:

Gengar (M) @ ?
Trait: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature [+SpA/-Atk]
~ Psychic
~ Shadow Ball
~ Thunderbolt
~ Giga Drain

Gengar is being used a Special Sweeper in this team, so I decided to give him a batch of strong special attacks; Thunderbolt, Psychic, and Giga Drain are also for the sake of type-coverage within this team.

Overall, this team has an attack for at least 13 types. It's missing an attack for Normal, Bug, Poison, and Steel. Maybe I should teach Return to one of my Pokémon? I'd like to have most of the types as an attack.

Anyways, let me know what I should change!

 

[PlatinumDude]

Iron Defense is a terrible move to use outside of Baton Pass teams because the opponent can just aim for Carracosta's weaker defensive stat to defeat it. Carracosta is also better off as a Shell Smasher, but Cloyster can do it better:
-Shell Smash
-Icicle Spear
-Rock Blast
-Razor Shell/Hydro Pump
Nature: Jolly/Naive
EVs: 4 HP/252 Atk/252 Spe
Item: White Herb/Focus Sash
Ability: Skill Link

Krookodile faces competition with Heracross and Salamence as a Choice Scarf Moxie abuser, so they're better options over it:

Heracross:
-Megahorn
-Close Combat
-Stone Edge
-Night Slash/Sleep Talk
Nature: Adamant/Jolly
EVs: 4 HP/252 Atk/252 Spe
Item: Choice Scarf
Ability: Moxie/Guts

Salamence:
-Outrage
-Dragon Claw
-Earthquake/Brick Break
-Fire Blast/Brick Break
Nature: Naive/Naughty
EVs: 252 Atk/4 SAtk/252 Spe
Item: Choice Scarf
Ability: Moxie

Nasty Plotting Lucario is better off using Vacuum Wave over Dragon Pulse so that it has a priority move to use, but Dragon Pulse is still viable if you can't breed for Vacuum Wave. Physical Lucario is also worth considering because ExtremeSpeed has higher base power and a higher priority bracket:
-Swords Dance
-Close Combat
-ExtremeSpeed
-Crunch/Ice Punch/Bullet Punch
Nature: Adamant/Jolly
EVs: 4 HP/252 Atk/252 Spe
Item: Life Orb

Gengar can easily get away with just Shadow Ball and Focus Blast as its main moves; both moves are unresisted together:
-Substitute
-Disable/Pain Split/Thunderbolt/Hidden Power (Fire)
-Shadow Ball
-Focus Blast
Nature: Timid
EVs: 4 HP/252 SAtk/252 Spe
Item: Black Sludge/Life Orb

or
-Shadow Ball
-Focus Blast
-Hidden Power (Fire)
-Protect
Nature: Timid
EVs: 4 HP/252 SAtk/252 Spe
Item: Life Orb/Black Sludge

 

[Musica]

Blissey can act as a Cleric as well. You can opt for Aromatherapy instead of Flamethrower. It's not going to kill practically anything. Giga Drain on Gengar is useless; base 60 HP won't last that long. Use HP Fire or Protect instead. While Psychic and Thunderbolt may sound promising, you won't get much kills from it. Scizor is a counter to Gengar, but with HP Fire and lucky predictions, you can kill Scizor on its switch-in. Other stuff mentioned already by PlatinumDude.

 

[PlatinumDude]

Blissey can act as a Cleric as well. You can opt for Aromatherapy instead of Flamethrower. It's not going to kill practically anything. Giga Drain on Gengar is useless; base 60 HP won't last that long. Use HP Fire or Protect instead. While Psychic and Thunderbolt may sound promising, you won't get much kills from it. Scizor is a counter to Gengar, but with HP Fire and lucky predictions, you can kill Scizor on its switch-in. Other stuff mentioned already by PlatinumDude.

Flamethrower is on Blissey so that it won't become Taunt bait. It also gives Blissey a move to hit non-Heatran Steels. If you want a move that hits for consistent damage, go for Seismic Toss.