Forretress @ Lum Berry  
Ability: Sturdy  
EVs: 252 HP / 4 Atk / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Spikes  
- Toxic Spikes  
- Rapid Spin  
- Gyro Ball  

Mewtwo @ Leftovers  
Ability: Pressure  
EVs: 248 HP / 32 Def / 228 Spe  
Timid Nature  
IVs: 0 Atk  
- Ice Beam  
- Flamethrower  
- Grass Knot  
- Recover  

Groudon @ Lum Berry  
Ability: Drought  
EVs: 80 HP / 252 Atk / 176 Spe  
Adamant Nature  
- Earthquake  
- Dragon Claw  
- Fire Punch  
- Rock Polish  

Giratina @ Leftovers  
Ability: Pressure  
EVs: 200 HP / 56 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Dragon Pulse  
- Calm Mind  
- Substitute  
- Protect  

Heatran @ Leftovers  
Ability: Flash Fire  
EVs: 248 HP / 140 SpD / 120 Spe  
Calm Nature  
IVs: 0 Atk  
- Lava Plume  
- Toxic  
- Taunt  
- Stealth Rock  

Palkia @ Choice Scarf  
Ability: Pressure  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Draco Meteor  
- Spacial Rend  
- Fire Blast  
- Thunder  

i saw wreckddra post an ebelt mewtwo set with grass knot and thought that was pretty fire. i adapted it to retain defensive utility of eating rp don eqs, scarfchomp, giratina o etc here and knew i wanted to use it with tspikes. tenta is boring tspiker so i went with forre instead. ofc u see lefties recover two, lum groudon, heatran as opposing tspikes insurance. i dont like using palkia scarf as sole ogre check so here's giratina to support it isntead of gira o. also pairs well with tspikes and lure mewtwo. heatran ofc is the steel of choice on a bulkier sun like this and frees up groudon to be rp instead of custap rocks or something like that.