Recently, I decided to make a fragile offense team, as oppossed to a bulkier one or (heavens forbid) stall. Basically, I've got a DS SR Suicide Lead, 2 Pokemon with similar counters, and a couple hard hitters. It's been working rather well.
Biggest problems for this team are Kingdra, Starmie, and Latias. Especially Latias. To a lesser degree, Swampert.
Here we go!
Images credit to Arkeis!
Azelf @ Light Clay
Ability: Levitate
EVs: 252 HP/4 Atk/252 Spd
Jolly nature (+Spd, -SAtk)
- Stealth Rock
- Reflect
- Light Screen
- Explosion
Suicide Lead. Honestly guys, no one's going to kill me in one hit- they'll SR first, so Sash is useless. Against a more offensive lead, I'll set up an appropriate Dual Screen first (Against Ttar, I can Reflect-->SR-->Explode). Reflect can really help Jirachi get set up and ravage through the midgame, and both screens can help Ape or Luke. Explosion gets me a kill, or weakens Metagross so Infernape can finish him. EVs are for maximum speed and overall bulk.
---
Salamence (M) @ Life Orb
Ability: Intimidate
EVs: 232 Atk/252 Spd/24 SAtk
Naive nature (+Spd, -SDef)
- Dragon Dance
- Fire Blast
- Outrage
- Earthquake
Beast. Standard DD Mence helps me crack open my foes for a lategame sweep. Not much to say here- DD is to set up, while STAB Dragon deals powerful blows. EQ and Fire Blast together hit everything Outrage doesn't. Powerful without setup- ridiculous with it. Gets good synergy with Jirachi.
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Heatran (M) @ Choice Scarf
Ability: Flash Fire
EVs: 4 Atk/252 Spd/252 SAtk
Naive nature (+Spd, -SDef)
- Earth Power
- Fire Blast
- Dragon Pulse
- Explosion
Also an overused beast. Standard ScarfTran. Fire Blast is for a powerful STAB once all resists are gone. Earth Power and Dragon Pulse get me the same unresisted coverage as Salamence. I chose Dragon Pulse over HP Ice for added power vs. Latias and Kingdra, my greatest foes, as well as for great neutral coverage. Explosion can clear out one last wall for a sweep, and its fun to do as well.
---
Jirachi @ Leftovers
Ability: Serene Grace
EVs: 252 HP/176 Spd/80 SAtk
Timid nature (+Spd, -Atk)
- Calm Mind
- Substitute
- Thunderbolt
- Flash Cannon
CM Rachi- my sets are getting old here. EVs are for good Speed and Special Attack while maintaining sufficient bulk to break Bliss. And yes, it CAN break Bliss. Sub is to give me a shield to set up behind, as well as to take the prediction out of Jirachi and guard vs. Statup ignoring crits. CM is the crux of the set, boosting my Special stats sky high to rain out pain with Tbolt and Flash Cannon. Swampert messes with me though, and CM Latias creates a ridiculous stall war.
---
Lucario (M) @ Life Orb
EVs: 4 HP/252 Atk/252 Spd
Jolly nature (+Spd, -SAtk)
- Swords Dance
- Close Combat
- Extremespeed
- Ice Punch
One of my two fighting type physical sweepers. The idea is that they have similar counters, allowing me to use one to weaken/bait counters so the other can sweep. Xspeed is useful when I need a priority to finish off a pesky, difficult foe. SD boosts me up so I can Xspeed with great force. CC is ridiculous STAB, and Ice Punch rounds it out, allowing me to OHKO Mence as it DDs after Intimidate. He's a dog with an SD Xspeed- he cleans up the scraps.
---
Infernape (M) @ Life Orb
Ability: Blaze
EVs: 64 Atk/192 Spd/252 SAtk
Naive nature (+Spd, -SDef)
- Close Combat
- Grass Knot
- Hidden Power [Ice]
- Fire Blast
Goes along with Luke. He also rips open the midgame, opening up a lategame Luke sweep. CC is his powerful base STAB, destroying Bliss and Ttar. Fire Blast is even more powerful coming from these EVs, and has the same general purpose of dealing massive damage. GK is, funnily enough, the only real answer to Swampert on my team (I can come in as it Ice Beams Salamence.) HP Ice allows me to deal with any non-Scarf Mence that tries to wall me, as well as rounding out perfect neutral coverage.
---
So that's my team. Basically, Azelf suicide leads, hopefully setting up screens for Ape, who proceeds to tear up the midgame along with everyone but Lucario. Luke then cleans up the scraps. It's been going pretty good, Latias/Kingdra/Swampert/Starmie aside. Thanks for helping me out!
Biggest problems for this team are Kingdra, Starmie, and Latias. Especially Latias. To a lesser degree, Swampert.
Here we go!
Images credit to Arkeis!

Azelf @ Light Clay
Ability: Levitate
EVs: 252 HP/4 Atk/252 Spd
Jolly nature (+Spd, -SAtk)
- Stealth Rock
- Reflect
- Light Screen
- Explosion
Suicide Lead. Honestly guys, no one's going to kill me in one hit- they'll SR first, so Sash is useless. Against a more offensive lead, I'll set up an appropriate Dual Screen first (Against Ttar, I can Reflect-->SR-->Explode). Reflect can really help Jirachi get set up and ravage through the midgame, and both screens can help Ape or Luke. Explosion gets me a kill, or weakens Metagross so Infernape can finish him. EVs are for maximum speed and overall bulk.
---

Salamence (M) @ Life Orb
Ability: Intimidate
EVs: 232 Atk/252 Spd/24 SAtk
Naive nature (+Spd, -SDef)
- Dragon Dance
- Fire Blast
- Outrage
- Earthquake
Beast. Standard DD Mence helps me crack open my foes for a lategame sweep. Not much to say here- DD is to set up, while STAB Dragon deals powerful blows. EQ and Fire Blast together hit everything Outrage doesn't. Powerful without setup- ridiculous with it. Gets good synergy with Jirachi.
---

Heatran (M) @ Choice Scarf
Ability: Flash Fire
EVs: 4 Atk/252 Spd/252 SAtk
Naive nature (+Spd, -SDef)
- Earth Power
- Fire Blast
- Dragon Pulse
- Explosion
Also an overused beast. Standard ScarfTran. Fire Blast is for a powerful STAB once all resists are gone. Earth Power and Dragon Pulse get me the same unresisted coverage as Salamence. I chose Dragon Pulse over HP Ice for added power vs. Latias and Kingdra, my greatest foes, as well as for great neutral coverage. Explosion can clear out one last wall for a sweep, and its fun to do as well.
---

Jirachi @ Leftovers
Ability: Serene Grace
EVs: 252 HP/176 Spd/80 SAtk
Timid nature (+Spd, -Atk)
- Calm Mind
- Substitute
- Thunderbolt
- Flash Cannon
CM Rachi- my sets are getting old here. EVs are for good Speed and Special Attack while maintaining sufficient bulk to break Bliss. And yes, it CAN break Bliss. Sub is to give me a shield to set up behind, as well as to take the prediction out of Jirachi and guard vs. Statup ignoring crits. CM is the crux of the set, boosting my Special stats sky high to rain out pain with Tbolt and Flash Cannon. Swampert messes with me though, and CM Latias creates a ridiculous stall war.
---

Lucario (M) @ Life Orb
EVs: 4 HP/252 Atk/252 Spd
Jolly nature (+Spd, -SAtk)
- Swords Dance
- Close Combat
- Extremespeed
- Ice Punch
One of my two fighting type physical sweepers. The idea is that they have similar counters, allowing me to use one to weaken/bait counters so the other can sweep. Xspeed is useful when I need a priority to finish off a pesky, difficult foe. SD boosts me up so I can Xspeed with great force. CC is ridiculous STAB, and Ice Punch rounds it out, allowing me to OHKO Mence as it DDs after Intimidate. He's a dog with an SD Xspeed- he cleans up the scraps.
---

Infernape (M) @ Life Orb
Ability: Blaze
EVs: 64 Atk/192 Spd/252 SAtk
Naive nature (+Spd, -SDef)
- Close Combat
- Grass Knot
- Hidden Power [Ice]
- Fire Blast
Goes along with Luke. He also rips open the midgame, opening up a lategame Luke sweep. CC is his powerful base STAB, destroying Bliss and Ttar. Fire Blast is even more powerful coming from these EVs, and has the same general purpose of dealing massive damage. GK is, funnily enough, the only real answer to Swampert on my team (I can come in as it Ice Beams Salamence.) HP Ice allows me to deal with any non-Scarf Mence that tries to wall me, as well as rounding out perfect neutral coverage.
---
So that's my team. Basically, Azelf suicide leads, hopefully setting up screens for Ape, who proceeds to tear up the midgame along with everyone but Lucario. Luke then cleans up the scraps. It's been going pretty good, Latias/Kingdra/Swampert/Starmie aside. Thanks for helping me out!