RMT- Battle Showdown Tested Team

Question

Hey guys, this is the first team I've really made by myself, so I'm interested to know how it holds up! Take a look and feel free to point out any glaring issues you might find with it.

Raijin (Thundurus) @ Leftovers
Ability: Prankster
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Thunder Wave
- Taunt
- Volt Switch
- Flash Cannon

Lobster-Bat (Gliscor) @ Toxic Orb
Ability: Poison Heal
EVs: 252 HP / 56 Def / 200 Spe
Impish Nature
- Earthquake
- Acrobatics
- Roost
- Toxic

Idk what this is (Ferrothorn) @ Rocky Helmet
Ability: Iron Barbs
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
IVs: 0 Spe
- Stealth Rock
- Leech Seed
- Power Whip
- Gyro Ball

Two Staryus (Starmie) @ Life Orb
Ability: Natural Cure
Shiny: Yes
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
IVs: 30 Atk / 30 Def
- Hydro Pump
- Psyshock
- Ice Beam
- Rapid Spin

Firebirdie (Talonflame) @ Sharp Beak
Ability: Gale Wings
EVs: 120 HP / 252 Atk / 136 Spe
Jolly Nature
- Brave Bird
- Flare Blitz
- Roost
- Swords Dance

Sgt. Pepper (Terrakion) @ Choice Band
Ability: Justified
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Close Combat
- X-Scissor
- Earthquake
- Stone Edge

Comments

Thunderus-Looks alright, but completely walled by ground types. You could put a move that's SE on ground types in place of Flash Cannon.
Gliscor-Acrobatics without fling has little purpose. Use Substitute or knock off instead. Also, consider 16 attack EVs to OHKO Lucario.
Ferrothorn-Relaxed>Impish for more gyro ball damage. Not too important though.
Starmie-Seems fine, you could consider recover as you have a life orb.
Talonflame-The sharp beak isn't very good. You do know there are no item limitations on showdown, don't you? You could use a life orb, but for in game where items are limited, it's fine.
Terrakion-Good setup.

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That Talonflame set has a specific purpose to NOT run Life Orb, as with Sharp Beak and a Swords Dance, you OHKO thundurus after stealth rock damage, thus removing the biggest offensive threat to talonflame. It ensures you dont get thunder waved as well, thanks to the Speed EVs + Gale Wings Priority.

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The Toxic orb on Gliscor is used in conjunction with Poison heal to provide recovery. Since its a one-time use item, Acrobatics gains the double power boost after the Toxic orb poisons Gliscor

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Toxic orb is not one use.

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Every thing is ok except the the thunderous it is completley walled by ground and rock types. the taunt is just basicly wasting a move for them to attack yu .