SM OU Tips, please!

[Caio_Eduardo]

Hi guys, I'm building a team and I need some tips. So far my team is like this:

Scizor (M) @ Scizorite
Ability: Technician
EVs: 248 HP / 16 Def / 244 SpD
Impish Nature
- Bullet Punch
- Roost
- Swords Dance
- U-turn

Heatran (M) @ Leftovers
Ability: Flash Fire
EVs: 252 HP / 128 SpD / 128 Spe
Calm Nature
IVs: 0 Atk
- Earth Power
- Lava Plume
- Stealth Rock
- Toxic

Gastrodon-East (F) @ Leftovers
Ability: Storm Drain
EVs: 248 HP / 8 Def / 252 SpD
Sassy Nature
- Earthquake
- Recover
- Scald
- Toxic

Tapu Bulu @ Leftovers
Ability: Grassy Surge
EVs: 248 HP / 8 Def / 252 SpD
Careful Nature
- Bulk Up
- Horn Leech
- Stone Edge
- Superpower

Are there any changes I may be making to the current team? And which Pokémon can I use to complete the team?

 

[maroon]

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. We also do not build teams but rather fix them up, please only post teams with six Pokemon. Please read the rules carefully and take a look at Team Showcase to see the level of detail we require. PM me with a full team, updated descriptions, and then I'll be happy to unlock this.

Here are some OU Resources in the meantime-
Sample Teams: https://www.smogon.com/forums/threads/usm-ou-sample-teams-v2-up.3638845/
Viability Rankings: https://www.smogon.com/forums/threads/usum-ou-ultra-viability-ranking-thread.3621329/