RMT First OU team I made I need opinions

[Yunaa]

Hey this is my first ou team and I need opinions on what I should change.

Landorus-Therian @ Choice Scarf
Ability: Intimidate
EVs: 244 Atk / 12 SpA / 252 Spe
Jolly Nature
- Earthquake
- U-turn
- Hidden Power [Ice]
- Stone Edge
Landorus-T helps this team by giving it more speed control as it's a Choice Scarf user as well as amazing role compression with Intimidate.


Gyarados @ Gyaradosite
Ability: Moxie
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Dragon Dance
- Earthquake
- Waterfall
- Crunch
Gyrados is a strong physical attacker and can waterfall a lando if needed.


Ferrothorn @ Leftovers
Ability: Iron Barbs
EVs: 252 HP / 252 Def
Impish Nature
IVs: 0 Spe
- Stealth Rock
- Leech Seed
- Gyro Ball
- Protect
I need a stealth rock user and a tank.

Magnezone @ Choice Scarf
Ability: Magnet Pull
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Thunderbolt
- Hidden Power [Fire]
- Flash Cannon
- Volt Switch
Magnezone is another one of my pokemon with a fire type move thats good for a kartana. Also volt switch if in a tough situation.


Toxapex @ Black Sludge
Ability: Merciless
EVs: 248 HP / 8 Def / 252 SpD
Calm Nature
IVs: 0 Atk
- Scald
- Haze
- Recover
- Toxic
Toxapex is my main stall pokemon that can also tank.

Heatran @ Leftovers
Ability: Flash Fire
EVs: 252 HP / 176 SpD / 80 Spe
Calm Nature
- Lava Plume
- Toxic
- Protect
- Earth Power
I need a pokemon that has fire moves.

 

[Twilight]

Hi, welcome to Smogon! I'm locking your RMT for the time being as the forum rules require that you provide at least 3 lines of descriptions for each Pokemon to explain their roles. Please read the rules carefully and take a look at Team Showcase to see the level of detail we require. PM me with updated descriptions and I'll be happy to unlock this.