I'm so close to finishing this team for ORAS WiFi Singles, I just need one more Pokémon to fill in the last slot. This is the team so far:
Heatran@ Air Balloon
Ability: Flash Fire
Nature: Modest
EVs: 252 SpA / 244 Spe / 16 HP
- Earth Power
- Lava Plume
- Taunt
- Stealth Rock
Tangrowth@ Leftovers/Big Root
Ability: Regenerator
Nature: Bold
EVs: 252 HP / 232 Def / 44 SDef
- Giga Drain
- Knock Off
- Earthquake
- Leech Seed
Breloom@ Toxic Orb
Ability: Poison Heal
Nature: Adamant
EVs: 252 Atk / 252 HP / 4 Spe
- Spore
- Swords Dance
- Mach Punch
- Seed Bomb
Azumarill@ Assault Vest
Ability: Huge Power
Nature: Adamant
EVs: 252 Atk / 240 HP / 16 Spe
- Play Rough
- Aqua Jet
- Waterfall
- Superpower
Scizor@ Life Orb
Ability: Technician
Nature: Adamant
EVs: 252 HP / 252 Atk / 4 Def
- Bullet Punch
- Roost
- U-Turn
- Knock Off/Tailwind
The final slot should go to a Special Attacker. I was considering Mega Latias for power, or Gengar/Mega Gengar to Spinblock. This Pokémon should be able to counter some of the team's major flaws, as well as not add any. Preferably, it should be somewhat bulky, which is why I considered Latias. It doesn't necessarily need to be a Mega, Scizor can always take that spot. Also, I have to catch/trade for this Pokémon myself, so try and keep the answer simple. Egg Moves are also difficult to obtain, so please try to steer clear of those. Also note that, of necessary, Lefties can be taken from Tangrowth and given to the suggestion 'Mon. Thanks a mil!