Ok, since my first thread was a bust, since almost no one posted to give me any advice, I'm gonna put that team aside for now, and try my luck with another team. This is a balanced team, with three sweepers (1 Physical, 1 Special, and 1 mixed) and three defensive/support Pokemon. This is only my second team idea, so I REALLY need some help. Thanks in advance!
The Sweepers:
Lucifer:
Absol
Absolite
Justified --> Magic Bounce
252 ATK/252 SPE/4 SPA
Naive Nature
Protect
Sucker Punch
Fire Blast
Play Rough
The most beautiful of all Arceus' creations, Lucifer was proud and vain. He wished to be the only one Arceus loved, the only one his creator would love. But then Arceus created other Pokemon, and Lucifer became jealous. So jealous in fact that he lead a rebellion against the creator Pokemon. However, victory was not to be Lucifer's, and the beautiful angel fell, losing not only much of his original power, but his wings as well. For years, Lucifer wandered the different regions of the world Arceus has created, until one day, he found the means to his return: The powerful Mega Stones, capable of returning Lucifer to his former glory once more, if only for a short amount of time. Now, with Mega Stone in paw, Lucifer builds a new army for himself, and plans to take Kalos, and then world, for himself.
Mega Absol acts as my mixed sweeper. With access to Magic Bounce, M-Absol stops so many dangerous Entry hazards and status conditions with ease. And a well timed switch-in, combined with a Spin-Blocker like Trevanant, can spell doom for my opponent (But we'll get to that later). M-Absol is a great mixed sweeper due to the fact that, with his amazing speed and high attack and special attack, most threats will not stand in its way. Ferrothorn, Skarmory, and Forretress giving you trouble? No worries, a single Fire Blast from M-Absol, and they are going down faster than you can say "That's a spicy Pokepuff!"
Now, Sucker Punch is the obvious needed STAB move, and with Magic Bounce, unless you are facing off a Defensive Pokemon, or a Pokemon that is obviously going to be setting up, it's gonna be pretty easy to predict what the opponent is going to do, and STAB Sucker Punch off this guy is gonna hurt. Real badly. Play Rough is to take down other Dark Types, Dragons such as Garchomp and Salamance, and of course, M-Absol's biggest threat, Fightning types. Now, you may be questioning, if Absol is a sweeper, why run Protect over Swords Dance? Very good question! The answer to that, comes in two parts:
Upon Mega Evolving, Absol keeps the horrible speed of its base form. Sure, Sucker Punch as priority, but upon Mega Evolving, setting up a Swords Dance is VERY risky. Protect keeps M-Absol in the game long enough for its new speed to kick in. Second of all, Protect allows M-Absol to also act as a scout, taking a sneak peek at what moves my opponent's mon has, all the while keeping my Bouncer Safe. M-Absol's Attack is high enough to be able to hit hard without Swords Dance, so I think Protect is the better option I find for this set.
Abbaddon
Tyrantrum
Life Orb
Strong Jaw
252 ATK/262 SPE/4 HP
Jolly/Adamant
Thunder Fang
Dragon Dance
Dragon Claw
Stone Edge
During the uprising, Abbaddon was one of Lucifer's Generals, a powerful being who's destructive power was like a force of nature. When he fell alongside Lucifer, he became a feral beast, destroying anything that moved, anything that dared get in his way. When Lucifer found him again, he was returned to his senses, and joined Lucifer's army once more, as his right hand, and his main destructive weapon.
Tyrantrum has the unique typing of Rock/Dragon, a pretty good typing if you ask me. A physical sweeper, Tyrantrum has access to Dragon Dance, giving it a great boost to its attacks and speed, and with moves like Stone Edge, Dragon Claw, and a Strong Jaw boosted Thunder Fang, (For pesky Water and Flying Types) Tyrantrum has a lot of coverage. Max ATK EVs is a given, considering it is a physical sweeper, and the speed EVs are to give it an extra boost, allowing this Tyrant to kill swiftly.
Lilith
Gengar
Choice Scarf
Levitate
252 SPA/252 SPE/4 HP
Timid
Shadow Ball
Focus Blast
Sludge Bomb (To be replaced by Sludge Wave post Poke-bank)
Thunderbolt
Lilith was Lucifer's Second General, and loved nothing more than to wreak havoc across the battle field. She tortured and maimed those in her way, taking out enemies slowly and painfully, her magical powers unrivaled. When she fell with Lucifer, she hid herself away, becoming a shadow of Fear and Mischief, but when he rose again, She rose as well, taking her place at his side once again, as his General.
Gengar is my Special Sweeper as well as my Fairy Killer. This role is VITAL as both Tyrantrum and M-Absol have a weakness to Fairies, and Gengar fills this great. Amazing Speed when combined with Choice Scarf, a powerful STAB Sludge Bomb will usually be enough to fell any Fairy that dares show its face to me. The rest of the moves are for basic coverage, Focus Blast for Ground threats, T-Bolt for Water threats, and Shadow Ball for pretty much everything else. Speed is really important for this build, since Gengar is kind of frail, and its role as a Fairy Killer is so important, which is why Max speed EVs have been invested.
The Support:
Azza
Ferrothorn
Rocky Helmet
Iron Barbs
252 HP/48 DEF/208 SPD
Relaxed
Stealth Rocks
Leech Seed
Thunder Wave
Power Whip
Azza was a guard in Lucifer's army, providing much needed defense and support in his Master's conquest. With strong defenses, Azza would set up traps for the enemy army, giving Lucifer's an edge in battle. He would watch with glee as his enemies sprang his traps and were quickly dealt with with the offensive monsters. When he fell, he went into a deep slumber, awoken many years later by his former Master. Wanting to please Lucifer again, he joined the Absol's new army, ready to cause havoc once again.
Ferrothorn is one of the best defensive Pokemon out there. I chose to run Stealth Rocks over Spikes simply because Flying types like Talonflame and Charizard are becoming more and more apparent, and both of them are terrified of Rocks. Leech Seed is to keep Thorn happy and healthy as he sets up, and T-wave is to troll my opponent, and give me an even bigger speed boost. Power Whip is there for two reasons: So I'm not completely shut down by taunt, and so that Thorn can hold his own against any popular Water types (*CoughAzumarillCough*). The Rocky Helmet/Iron Barbs combo is great to troll anyone who physically attack it, and the EVs are pretty basic for keeping Ferrothron alive.
Beleth
Trevenant
Sitrus Berry
Harvest
120 DEF/252 HP/132 SPE
Impish
Leech Seed
Will-O-Wisp
Substitute
Shadow Claw
Beleth was known as the immortal angel during the uprising, his use of trickery and healing powers making him seem as if he were unstoppable. When he fell alongside Lucifer, he hid himself deep within a haunted forest, devouring lost children and Pokemon. When Lucifer returned to power, he eagerly joined back with his former Master, ready to show the world his true and terrible powers.
Trevenant is a great Spinblocker because of the sheet longevity it can get with Harvest and Sitrust Berry. This is great for protecting not only my own hazards, but any hazards M-Absol may have bounced back to my opponent's field. Combined with Substitute, Trevenant gains even greater longevity, and with a constant supply of HP coming in through Leech Seed, Trevenant can pretty much run wild and Burn my opponent's Pokemon, all the while knocking them down bit by bit with Shadow Claw. The EV Spread may seem weird, but Trevenant wants to be fast while still being defensive, so it can get it Sub up and prepare a Leech Seed. Trevenant. A great Spin Blocker, and a dangerous staller, all rolled into one creepy tree. Gotta love it.
Bune
Goodra
Assault Vest
Gooey
252 HP/252 SPA/4 SDEF
Calm
Draco Meteor
Sludge Wave
Dragon Tail
Fire Blast
Bune was a tank in Lucifer's army, capable of taking numerous hits, while hitting back just has hard with his sheer amount of power. The stickiness of his body slowed down anyone and caught them in his trap as he watched in glee. When Lucifer fell, he hid himself deep within the bogs of Kalos, only rising again for the call of his Master.
Despite my original hate on Goodra for being Mono Dragon, this seems to have actually been a blessing for Goodra, since it only has three weaknesses (Ice, Dragon, and Fairy). This Goodra here acts as a special wall, with Assault Vest, able to take most Special hits and hitting back hard. Sludge Wave helps counter Fairies, Dragon Tail helps with Stealth Rock Shenanigans, Draco Meteor is for massive STAB, and Fire Blast is for coverage. Gooey is to help slow down anyone who is foolish enough to hit my physically. All in all...I think Goodra is starting to grow on me.
So, there it is. As I said, please let me know what you think, and what could be changed/improved.
The Sweepers:

Lucifer:
Absol
Absolite
Justified --> Magic Bounce
252 ATK/252 SPE/4 SPA
Naive Nature
Protect
Sucker Punch
Fire Blast
Play Rough
The most beautiful of all Arceus' creations, Lucifer was proud and vain. He wished to be the only one Arceus loved, the only one his creator would love. But then Arceus created other Pokemon, and Lucifer became jealous. So jealous in fact that he lead a rebellion against the creator Pokemon. However, victory was not to be Lucifer's, and the beautiful angel fell, losing not only much of his original power, but his wings as well. For years, Lucifer wandered the different regions of the world Arceus has created, until one day, he found the means to his return: The powerful Mega Stones, capable of returning Lucifer to his former glory once more, if only for a short amount of time. Now, with Mega Stone in paw, Lucifer builds a new army for himself, and plans to take Kalos, and then world, for himself.
Mega Absol acts as my mixed sweeper. With access to Magic Bounce, M-Absol stops so many dangerous Entry hazards and status conditions with ease. And a well timed switch-in, combined with a Spin-Blocker like Trevanant, can spell doom for my opponent (But we'll get to that later). M-Absol is a great mixed sweeper due to the fact that, with his amazing speed and high attack and special attack, most threats will not stand in its way. Ferrothorn, Skarmory, and Forretress giving you trouble? No worries, a single Fire Blast from M-Absol, and they are going down faster than you can say "That's a spicy Pokepuff!"
Now, Sucker Punch is the obvious needed STAB move, and with Magic Bounce, unless you are facing off a Defensive Pokemon, or a Pokemon that is obviously going to be setting up, it's gonna be pretty easy to predict what the opponent is going to do, and STAB Sucker Punch off this guy is gonna hurt. Real badly. Play Rough is to take down other Dark Types, Dragons such as Garchomp and Salamance, and of course, M-Absol's biggest threat, Fightning types. Now, you may be questioning, if Absol is a sweeper, why run Protect over Swords Dance? Very good question! The answer to that, comes in two parts:
Upon Mega Evolving, Absol keeps the horrible speed of its base form. Sure, Sucker Punch as priority, but upon Mega Evolving, setting up a Swords Dance is VERY risky. Protect keeps M-Absol in the game long enough for its new speed to kick in. Second of all, Protect allows M-Absol to also act as a scout, taking a sneak peek at what moves my opponent's mon has, all the while keeping my Bouncer Safe. M-Absol's Attack is high enough to be able to hit hard without Swords Dance, so I think Protect is the better option I find for this set.

Abbaddon
Tyrantrum
Life Orb
Strong Jaw
252 ATK/262 SPE/4 HP
Jolly/Adamant
Thunder Fang
Dragon Dance
Dragon Claw
Stone Edge
During the uprising, Abbaddon was one of Lucifer's Generals, a powerful being who's destructive power was like a force of nature. When he fell alongside Lucifer, he became a feral beast, destroying anything that moved, anything that dared get in his way. When Lucifer found him again, he was returned to his senses, and joined Lucifer's army once more, as his right hand, and his main destructive weapon.
Tyrantrum has the unique typing of Rock/Dragon, a pretty good typing if you ask me. A physical sweeper, Tyrantrum has access to Dragon Dance, giving it a great boost to its attacks and speed, and with moves like Stone Edge, Dragon Claw, and a Strong Jaw boosted Thunder Fang, (For pesky Water and Flying Types) Tyrantrum has a lot of coverage. Max ATK EVs is a given, considering it is a physical sweeper, and the speed EVs are to give it an extra boost, allowing this Tyrant to kill swiftly.

Lilith
Gengar
Choice Scarf
Levitate
252 SPA/252 SPE/4 HP
Timid
Shadow Ball
Focus Blast
Sludge Bomb (To be replaced by Sludge Wave post Poke-bank)
Thunderbolt
Lilith was Lucifer's Second General, and loved nothing more than to wreak havoc across the battle field. She tortured and maimed those in her way, taking out enemies slowly and painfully, her magical powers unrivaled. When she fell with Lucifer, she hid herself away, becoming a shadow of Fear and Mischief, but when he rose again, She rose as well, taking her place at his side once again, as his General.
Gengar is my Special Sweeper as well as my Fairy Killer. This role is VITAL as both Tyrantrum and M-Absol have a weakness to Fairies, and Gengar fills this great. Amazing Speed when combined with Choice Scarf, a powerful STAB Sludge Bomb will usually be enough to fell any Fairy that dares show its face to me. The rest of the moves are for basic coverage, Focus Blast for Ground threats, T-Bolt for Water threats, and Shadow Ball for pretty much everything else. Speed is really important for this build, since Gengar is kind of frail, and its role as a Fairy Killer is so important, which is why Max speed EVs have been invested.
The Support:

Azza
Ferrothorn
Rocky Helmet
Iron Barbs
252 HP/48 DEF/208 SPD
Relaxed
Stealth Rocks
Leech Seed
Thunder Wave
Power Whip
Azza was a guard in Lucifer's army, providing much needed defense and support in his Master's conquest. With strong defenses, Azza would set up traps for the enemy army, giving Lucifer's an edge in battle. He would watch with glee as his enemies sprang his traps and were quickly dealt with with the offensive monsters. When he fell, he went into a deep slumber, awoken many years later by his former Master. Wanting to please Lucifer again, he joined the Absol's new army, ready to cause havoc once again.
Ferrothorn is one of the best defensive Pokemon out there. I chose to run Stealth Rocks over Spikes simply because Flying types like Talonflame and Charizard are becoming more and more apparent, and both of them are terrified of Rocks. Leech Seed is to keep Thorn happy and healthy as he sets up, and T-wave is to troll my opponent, and give me an even bigger speed boost. Power Whip is there for two reasons: So I'm not completely shut down by taunt, and so that Thorn can hold his own against any popular Water types (*CoughAzumarillCough*). The Rocky Helmet/Iron Barbs combo is great to troll anyone who physically attack it, and the EVs are pretty basic for keeping Ferrothron alive.

Beleth
Trevenant
Sitrus Berry
Harvest
120 DEF/252 HP/132 SPE
Impish
Leech Seed
Will-O-Wisp
Substitute
Shadow Claw
Beleth was known as the immortal angel during the uprising, his use of trickery and healing powers making him seem as if he were unstoppable. When he fell alongside Lucifer, he hid himself deep within a haunted forest, devouring lost children and Pokemon. When Lucifer returned to power, he eagerly joined back with his former Master, ready to show the world his true and terrible powers.
Trevenant is a great Spinblocker because of the sheet longevity it can get with Harvest and Sitrust Berry. This is great for protecting not only my own hazards, but any hazards M-Absol may have bounced back to my opponent's field. Combined with Substitute, Trevenant gains even greater longevity, and with a constant supply of HP coming in through Leech Seed, Trevenant can pretty much run wild and Burn my opponent's Pokemon, all the while knocking them down bit by bit with Shadow Claw. The EV Spread may seem weird, but Trevenant wants to be fast while still being defensive, so it can get it Sub up and prepare a Leech Seed. Trevenant. A great Spin Blocker, and a dangerous staller, all rolled into one creepy tree. Gotta love it.

Bune
Goodra
Assault Vest
Gooey
252 HP/252 SPA/4 SDEF
Calm
Draco Meteor
Sludge Wave
Dragon Tail
Fire Blast
Bune was a tank in Lucifer's army, capable of taking numerous hits, while hitting back just has hard with his sheer amount of power. The stickiness of his body slowed down anyone and caught them in his trap as he watched in glee. When Lucifer fell, he hid himself deep within the bogs of Kalos, only rising again for the call of his Master.
Despite my original hate on Goodra for being Mono Dragon, this seems to have actually been a blessing for Goodra, since it only has three weaknesses (Ice, Dragon, and Fairy). This Goodra here acts as a special wall, with Assault Vest, able to take most Special hits and hitting back hard. Sludge Wave helps counter Fairies, Dragon Tail helps with Stealth Rock Shenanigans, Draco Meteor is for massive STAB, and Fire Blast is for coverage. Gooey is to help slow down anyone who is foolish enough to hit my physically. All in all...I think Goodra is starting to grow on me.
So, there it is. As I said, please let me know what you think, and what could be changed/improved.