I think that there is good synergy and Latias/Gliscor are great. But I haven't been winning lately. Any improvements?
Gliscor@Toxic Orb@Poison Heal
Impish Nature
252 HP/184 Def/72 Spe

~Swords Dance
~Taunt
~Earthquake
~Ice Fang
Latias@Leftovers@Levitate
Bold Nature
252 HP/228 Def/28 Spe

~Reflect
~Calm Mind
~Recover
~Dragon Pulse
Jirachi@Leftovers@Serene Grace
Careful Nature
252 HP/224 SpD/32 Spe

~Iron Head
~Body Slam
~Wish
~Protect
Heatran@Air Balloon@Flash Fire
Calm Nature
248 HP/100 SpD/160 Spe

~Stealth Rocks
~Fire Blast
~Dragon Pulse
~Roar
Gastrodon@Leftovers@Storm Drain
Calm Nature
252 HP/4 SpA/252 SpD

~Toxic
~Recover
~Earth Power
~Ice Beam
Hitmontop@Leftovers@Intimidate
Impish Nature
252 HP/252 Def/4 SpD

~Rapid Spin
~Foresight
~Close Combat
~Sucker Punch