Overview of the Team
Well I've changed this team many times and I think I finally have something that may be at least decent. I tried to use OUs, but put a little spin on some of them.
Gengar@Leftovers
Hasty/252 Sp.Atk 252 Spe 4 Atk
Hypnosis
Substitute
ShadowBall
Focus Punch
I don't really like the Acc of Focus Blast, since it never hits when you need it to >_> plus Focus Punch and Shadow Ball covers everything out there. You lose the ability to counter Gyara, but you can still do some damage with ShadowBall. A good wall breaker
Jirachi@Leftovers
Impish/240 HP 214 Def 56 Atk
Zen Headbutt
Wish
U-Turn
Protect
The main supporter of the team. It provides Wish support for itself and the other ones who may need it on the team. I chose to dump the Speed EVs into Def b/c I'd rather sacrifice Speed for Defense since the teams needs some defensive help. Esp. for Garchomp. It can also help sometimes since the opposing attacks Jirachi before the U-turn I can get the pokemon I'm u-turning to in safely. Protect for scouting and avoiding damage when wishing.
Salamence@Choice Specs
Modest/252 Sp.Atk 252 Spe 4 HP
Draco Meteor
Dragon Pulse
Flamethrower
Hydro Pump
One of my gyara counters since I don't have thunderbolt on Gengar. Usually the only counter is Blissey.
Slowbro@Leftovers
Bold/212 HP 252 Def 44 Sp.Atk
Slack Off
Ice Beam
Surf
Hidden Power(Electric)/Reflect
My other Gyara counter in case he gets a few DDs in or it carries ice fang, but mostly the counter for Garchomp since they are running around everywhere these days. This spot once belonged to Starmie, but Slowbro is the same thing just without Rapid Spin.
Heracross@Choice Band
Adamant/104 HP 252 Atk 152 Spe
Close Combat
Megahorn
Pursuit
Stone Edge
The physical version of Salamence, basically the other hard hitter of the team. Pursuit to catch the fleeing pokemon. He loves burns.
Blissey@Leftovers
Bold/152 HP 252 Def 104 Sp.Atk
Softboiled
Seismic Toss
Stealth Rock
Ice Beam
Well...you know what Blissey does. Not the best SRer, but she'll have to do.
Well I've changed this team many times and I think I finally have something that may be at least decent. I tried to use OUs, but put a little spin on some of them.

Gengar@Leftovers
Hasty/252 Sp.Atk 252 Spe 4 Atk
Hypnosis
Substitute
ShadowBall
Focus Punch
I don't really like the Acc of Focus Blast, since it never hits when you need it to >_> plus Focus Punch and Shadow Ball covers everything out there. You lose the ability to counter Gyara, but you can still do some damage with ShadowBall. A good wall breaker

Jirachi@Leftovers
Impish/240 HP 214 Def 56 Atk
Zen Headbutt
Wish
U-Turn
Protect
The main supporter of the team. It provides Wish support for itself and the other ones who may need it on the team. I chose to dump the Speed EVs into Def b/c I'd rather sacrifice Speed for Defense since the teams needs some defensive help. Esp. for Garchomp. It can also help sometimes since the opposing attacks Jirachi before the U-turn I can get the pokemon I'm u-turning to in safely. Protect for scouting and avoiding damage when wishing.

Salamence@Choice Specs
Modest/252 Sp.Atk 252 Spe 4 HP
Draco Meteor
Dragon Pulse
Flamethrower
Hydro Pump
One of my gyara counters since I don't have thunderbolt on Gengar. Usually the only counter is Blissey.

Slowbro@Leftovers
Bold/212 HP 252 Def 44 Sp.Atk
Slack Off
Ice Beam
Surf
Hidden Power(Electric)/Reflect
My other Gyara counter in case he gets a few DDs in or it carries ice fang, but mostly the counter for Garchomp since they are running around everywhere these days. This spot once belonged to Starmie, but Slowbro is the same thing just without Rapid Spin.

Heracross@Choice Band
Adamant/104 HP 252 Atk 152 Spe
Close Combat
Megahorn
Pursuit
Stone Edge
The physical version of Salamence, basically the other hard hitter of the team. Pursuit to catch the fleeing pokemon. He loves burns.

Blissey@Leftovers
Bold/152 HP 252 Def 104 Sp.Atk
Softboiled
Seismic Toss
Stealth Rock
Ice Beam
Well...you know what Blissey does. Not the best SRer, but she'll have to do.