A few good ones I can think of are
Lat@site + soul dew
Soul dew > vest because soul dew gives 50% buff to both special stats and status moves can be used
Latias (F) @ Latiasite & Soul Dew
Ability: Levitate
EVs: 136 HP / 252 Def / 120 SpA
Bold Nature
IVs: 0 Atk (Fix for hp fire)
- Recover
- Dragon Pulse
- Thunderbolt/Ice Beam
- Hp Fire/Surf
With this stat spread you'll take min damage from toxic, burn, confusion recoil, foul play. When mega with soul dew buffs your defensive stats will be 335/372/504 which makes Latias extremely bulky Recover>Roost because there is no need for latias to roost, unlike flying types Latias doesn't lose any weaknesses while roosting and for one turn nullifies her ground immunity. Dragon Pulse is better over Draco so she can stay in with a special attack of 519 (After soul dew) and not have to worry about not hitting like a truck, Thunder beam/Ice beam for coverage BoltBeam is good how ever if you run Hp-fire ferrothorns and all steel types (excluding heatran) will be devastated by Hp-Fire, Surf can be used over Hp-Fire if you want to take out things like heatran, excadrill, gliscor, landorus, mamo etc.
Any offensive mega+ life orb/Band
Belly Drum Azumarill Sitrus+Lum
Anything with a quad weakness Type weakening berry+ Normal held item
And any sweeper Scarf+Band/Specs