This team is mainly designed to hit the opponent hard with powerful pokemon while not being dependent on one particular pokemon to sweep. Each member is designed to be able to take advantage of pokemon other members lure out. As I am not dependent on a particular sweeper I don't to worry about specific threats for one pokemon as much. Because I don't have a sweeper i can sometimes struggle to break through strong defenses because I can't boost my power. I'm not sure where I could fit a sweeper into my team as well. Any help on this and any other issues is appreciated.
Aerodactyl@ Focus Sash
Pressure
4HP/252Atk/252Spe
Jolly
-Taunt
-Stealth Rock
-Earthquake
-Rockslide
Standard Aero lead. Sets up SR straightaway and stops other leads from setting up. If it somehow survives the start then can be useful midgame to revenge stuff like Infernape and Heatran.
Gengar@ Life Orb
Levitate
4HP/252Spe/252SpA
Timid
-Substitute
-Pain Split
-Shadow Ball
-Focus Blast
Subsplit Gengar is a third of my main offensive core of it, Tyranitar and Magnezone. Its resistances and immunities allow it to come in on a lot and set up a sub. Behind this it has perfect coverage with its attacks and can also beat all forms of TTar. Pain Split is needed for healing sub and LO damage. It is especially useful against Blissey as a seismic toss Blissey can't hurt Gengar at all.
Tyranitar@ Choice Scarf
Sand Stream
4HP/252Atk/252Spe
Jolly
-Crunch
-Pursuit
-Stone Edge
-Earthquake
Second member of my core. TTar is used to beat a lot of fast threats such as Starmie and Gengar who can trouble the rest of my team. It can also beat Heatran which can cause problems for Magnezone and Gengar. The main problem is with a choice scarf it doesn't have the power to break through walls such as skarmory and even blissey. I have tried a choice band but the lack of speed was a problem.
Magnezone@ Leftovers
Magnet Pull
172HP/84Spe/252SpA
Rash
-Substitute
-Thunderbolt
-HP Grass
-Explosion
The third member of my core and steel checker. Magnezone makes sure random steels like Jirachi, Scizor and Skarmory don't stop my other hitters. It can also check other pokemon with its natural physical bulk. I have used it against swampert in a pinch but try not to have to do that. The choice of Hidden Power was a toss up between grass and ice.
Flygon@ Choice Scarf
Levitate
252Atk/252Spe/4SpD
Jolly
-Earthquake
-Outrage
-U-Turn
-Stone Edge
Flygon is my general purpose scout and revenge killer. Early in the match if I have a blind switch I go to Flygon so I can u-turn for this best match-up. Flygon is also my best revenge killer for DD Gyarados and Dragonite and Agiligross. It can also help lure in steels with its Outrage for magnezone to trap.
Infernape@ Life Orb
Blaze
64Atk/192Spe/252SpA
Naive
-Close Combat
-Fire Blast
-Grass Knot
-HP Ice
Infernape is my main wallbreaker and my best chance at late game sweeping. It can destroy most main defense cores such as skarmbliss and celetran. Its good coverage makes it a good check to most unboosted dragons as well. Because it is my only mixed attacker it my only real hope at beating stall and so is important to preserve against those teams.

Aerodactyl@ Focus Sash
Pressure
4HP/252Atk/252Spe
Jolly
-Taunt
-Stealth Rock
-Earthquake
-Rockslide
Standard Aero lead. Sets up SR straightaway and stops other leads from setting up. If it somehow survives the start then can be useful midgame to revenge stuff like Infernape and Heatran.

Gengar@ Life Orb
Levitate
4HP/252Spe/252SpA
Timid
-Substitute
-Pain Split
-Shadow Ball
-Focus Blast
Subsplit Gengar is a third of my main offensive core of it, Tyranitar and Magnezone. Its resistances and immunities allow it to come in on a lot and set up a sub. Behind this it has perfect coverage with its attacks and can also beat all forms of TTar. Pain Split is needed for healing sub and LO damage. It is especially useful against Blissey as a seismic toss Blissey can't hurt Gengar at all.

Tyranitar@ Choice Scarf
Sand Stream
4HP/252Atk/252Spe
Jolly
-Crunch
-Pursuit
-Stone Edge
-Earthquake
Second member of my core. TTar is used to beat a lot of fast threats such as Starmie and Gengar who can trouble the rest of my team. It can also beat Heatran which can cause problems for Magnezone and Gengar. The main problem is with a choice scarf it doesn't have the power to break through walls such as skarmory and even blissey. I have tried a choice band but the lack of speed was a problem.

Magnezone@ Leftovers
Magnet Pull
172HP/84Spe/252SpA
Rash
-Substitute
-Thunderbolt
-HP Grass
-Explosion
The third member of my core and steel checker. Magnezone makes sure random steels like Jirachi, Scizor and Skarmory don't stop my other hitters. It can also check other pokemon with its natural physical bulk. I have used it against swampert in a pinch but try not to have to do that. The choice of Hidden Power was a toss up between grass and ice.

Flygon@ Choice Scarf
Levitate
252Atk/252Spe/4SpD
Jolly
-Earthquake
-Outrage
-U-Turn
-Stone Edge
Flygon is my general purpose scout and revenge killer. Early in the match if I have a blind switch I go to Flygon so I can u-turn for this best match-up. Flygon is also my best revenge killer for DD Gyarados and Dragonite and Agiligross. It can also help lure in steels with its Outrage for magnezone to trap.

Infernape@ Life Orb
Blaze
64Atk/192Spe/252SpA
Naive
-Close Combat
-Fire Blast
-Grass Knot
-HP Ice
Infernape is my main wallbreaker and my best chance at late game sweeping. It can destroy most main defense cores such as skarmbliss and celetran. Its good coverage makes it a good check to most unboosted dragons as well. Because it is my only mixed attacker it my only real hope at beating stall and so is important to preserve against those teams.