Rate my Revised Team

[JimmyNeutronSwag]

Forretress @ Leftovers
Relaxed 252 HP / 176 Def / 80 SpD
-Volt Switch
~ Spikes
~ Rapid Spin
~ Gyro Ball
Physically defensive Forretress, first on my team. It will set up Spikes then it will use Volt Switch to switch out. Rapid Spin completes Forretress moveset spinning away all opposing entry hazards. I am using this defensive purposes only

Terrakion @Life Orb
Adamant 4 HP / 252 Atk / 252 Spe
- Close Combat
~ Stone Edge
~ X-Scissor
~ Rock Polish
Terrakion is a beast, with its massive Attack power, it will plow right through anything, Rock Polish to raise it speed up, Close combat to destroy Steel or Rock types, X-Scissor to take out Grass types and Stone edge to take out flying types.

Cloyster @?, Skill Link
Jolly 252 Atk / 4 SpA / 252 Spe
-Shell Smash
~ Icicle Spear
~ Rock Blast
~ Hydro Pump / Razor Shell

My 2nd in command, Smashing it shell to increase its Speed, attack and SpA while decreasing its Defense and SpD. Will take down those rock types and flying types if Terrakion get KO.

Landorus Life Orb
Sheer Force
Timid 252 SpA / 4 SpD / 252 Spe
~ Earth Power
~ Focus Blast
~ Hidden Power Ice
~ Psychic
My special sweeper, with Sheer force it will be good. Thinking of replacing it with Volcarona so it won't KO half of my team.

Metagross @ Choice Band
Adamant 252 HP / 252 Atk / 4 Def
~ Meteor Mash
~ Hammer Arm
~ Bullet Punch
~Zen Headbutt
Choice Band Metagross can hit hard, Meteor Mash is a perfect STAB move
Hammer Arm is strong but it a hit or miss move due to its accuracy Bullet Punch due to it low speed, and Zen Headbutt to KO fighting types that can KO Terrakion and Cloyster. Thinking of replacing it with Scizor

Rotom-W @ Choice Scarf
Timid 4 HP / 252 SpA / 252 Spe
-Thunderbolt
~ Hydro Pump
~ Hidden Power Fire
~ Trick
Thunderbolt can abuse rain amazingly, especially with Drizzle Politoed existing. Hydro Pump is Rotom-W's unique attack, and it is a good one.Hidden Power [Fire] can destroy Ferrothorn.

Any changes to be made? Is Heatran needed for this team?

 

[Taylor]

This RMT isn't complete and falls short on descriptions in areas because you're describing the moves only, and that's not enough. Landorus hasn't even been used which suggests you've made this team and posted it shortly after buildng, which also violates the RMT rules. Please improve your descriptions otherwise your thread will be locked.

 

[Alfalfa]

You should also handle that huge Quagsire weakness as well. Although Quagsire is rare, its ability in Unaware will be a pestilence to Cloyster.