Single Battle Recommended Team - Advanced Gen.

   
Genger   Swampert    Alakazam  
   
Skarmory      Tauros     Blissey

Gengar (F) @ Leftovers
Trait: Levitate
EVs: 252 Spd / 252 SAtk / 4 SDef
Modest/Timid Nature (+Spd, -Def)
- Destiny Bond
- Ice Punch
- Substitute
- Thunderbolt

Tauros (M) @ Choice Band
Trait: Intimidate
EVs: 4 HP / 252 Atk / 252 Spd
Adamant Nature (+Atk, -SAtk)
- Earthquake
- Hidden Power [Ghost]
- Iron Tail
- Return

Alakazam (M) @ Petaya Berry
Trait: Synchronize
EVs: 4 HP / 252 Spd / 252 SAtk
Timid Nature (+Spd, -Atk)
- Calm Mind
- Fire Punch
- Psychic
- Thunderpunch

Swampert (M) @ Leftovers
Trait: Torrent
EVs: 240 HP / 16 Atk / 136 Def / 80 SAtk / 36 SDef
Relaxed Nature (+Def, -Spd)
- Curse
- Earthquake
- Ice Beam
- Surf/Rest

Skarmory (F) @ Leftovers
Trait: Keen Eye
EVs: 128 HP / 128 Atk / 252 SDef
Impish Nature (+Def, -SAtk)
- Drill Peck
- Roar
- Spikes
- Rest

Blissey (F) @ Leftovers
Trait: Natural Cure
EVs: 252 HP / 64 Atk / 192 Def
Bold Nature (+Def, -Atk)
- Heal Bell
- Seismic Toss
- Softboiled
- Toxic
Note: "212 HP / 252 Def / 44 SDef. Or you could run 252/252/6 with HP/Def/SDef. TWave/Ice Beam > Toxic IMO."

Recommended Team (Advanced Double Battle)
Gengar, Electrode, Togetic, Tyranitar, Zapdos

              

Gengar @ Leftovers
Trait: Levitate
EVs: 80 HP / 176 Spd / 252 SAtk
Timid Nature (+Spd, -Atk)
- Thunderbolt
- Skill Swap
- Ice Punch
- Destiny Bond

Electrode @ Choice Band
Trait: Soundproof
EVs: 4 HP / 252 Atk / 252 Spd
Naughty Nature (+Atk, -SDef)
- Hidden Power [Ghost]
- Thunder
- Explosion

Togetic  @ Leftovers
Trait: Serene Grace
EVs: 252 HP / 110 Def / 148 SDef
Calm Nature (+SDef, -Atk)
- Follow Me
- Protect
- Seismic Toss
- Softboiled

Tyranitar  @ Leftovers
Trait: Sand Stream
EVs: 252 HP / 168 Spd / 88 SDef
Adamant Nature (+Atk, -SAtk)
- Dragon Dance
- Earthquake
- Return
- Rock Slide

Zapdos @ Leftovers
Trait: Pressure
EVs: 4 HP / 252 Spd / 252 SAtk
Timid Nature (+Spd, -Atk)
- Thunderbolt
- Hidden Power [Ice]
- Rest
- Sleep Talk