Introduction:
Hi smogon, I have used this team for some time and i decided to post it here to maybe get it to be a little better.
The Team at a glance:






Building process:
I started with my main sweeper. I like lucario because it's somewhat good in stall breaking.
Then, I wanted something to take out lucario's counters. A mixed tyranitar does this job quite well, so i chose it.
Now i wanted to choose a lead. Something that sets rocks up most of the times. I chose aerodactyl, also because it's immune to sandstorm.
Now I wanted something to spin block. Rotom instantly came to my mind. Will-o-wisp also might help lucario set up, while crippling physical sweepers overall. I chose the cut form because when i first made the team, i used leaf storm for swampert.
Now i wanted a revenge killer. I chose heatran due to its good special attack, typing, ability and immunity to sandstorm.
The last slot of the team is just a filler, I'm looking forward to a good replacement for it.

Then, I wanted something to take out lucario's counters. A mixed tyranitar does this job quite well, so i chose it.


Now i wanted to choose a lead. Something that sets rocks up most of the times. I chose aerodactyl, also because it's immune to sandstorm.



Now I wanted something to spin block. Rotom instantly came to my mind. Will-o-wisp also might help lucario set up, while crippling physical sweepers overall. I chose the cut form because when i first made the team, i used leaf storm for swampert.




Now i wanted a revenge killer. I chose heatran due to its good special attack, typing, ability and immunity to sandstorm.





The last slot of the team is just a filler, I'm looking forward to a good replacement for it.






A closer look into the team:

Aerodactyl @ focus sash
ability - pressure
jolly nature
EVs: 6 hp/252 atk/252 spe
-earthquake
-stone edge
-stealth rock
-taunt
The best lead to set up rocks and prevent others from doing so in my opinion, also fits well in a team with sandstorm.

Lucario @ life orb
ability - inner focus
adamant nature
EVs: 252 atk/252 spe/6 sp def
-swords dance
-close combat
-extremespeed
-crunch
The usual SD lucario, a huge physical threat. Also good at beating stall. Skarmory is OHKOed by close combat with SR up.

Tyranitar @ expert belt
ability - sand stream
relaxed nature
EVs: 186 hp/36 atk/108 def/28 spe/152 sp atk
-crunch
-earthquake
-fire blast
-ice beam
The main purpose of this tyranitar is to clear pokemon that threaten lucario. With the EVs, an EQ from standard gliscor or hippowdon does about 40%, while i can OHKO gliscor with ice beam, or 2HKO hippowdon. Fire blast usually OHKOes skarmory, and always OHKOes scizor and forretress. Crunch is to take things like gengar out of the way, EQ for heatran mainly.

Heatran @ choice scarf
ability - flash fire
naive nature
EVs: 6 atk/252 sp atk/252 spe
-fire blast
-earth power
-hidden power [electric]
-explosion
The usual scarf heatran. A great revenge killer and general steel type counter. I chose HP electric to make it easier to counter gyarados, which is a bit of a problem to this team.

Rotom-c @ leftovers
ability - levitate
bold nature
EVs: 252 hp/188 def/70 spe
-will-o-wisp
-shadow ball
-rest
-sleep talk
The spin blocker. I chose shadow ball to make it easier to counter latias, but I'm considering going back to thunderbolt/discharge for gyarados.

Jirachi @ leftovers
ability - serene grace
jolly nature
EVs: 252 hp/6 atk/252 spe
-substitute
-thunder wave
-iron head
-ice punch
Its main job is to spread paralysis around, maybe take something out by haxing it to death. I consider it just a filler.
Please leave your opinion about this team here, thanks in advance.