npmegahoundoom+supportwhimsicott

Jirachi @ Leftovers
Ability: Serene Grace
EVs: 252 HP / 220 SpD / 36 Spe
Careful Nature
- Wish
- Protect
- Body Slam
- Iron Head

Keldeo-Resolute @ Choice Scarf
Ability: Justified
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 1 Atk / 30 SpA
- Hydro Pump
- Scald
- Secret Sword
- Hidden Power [Electric]

Latios (M) @ Life Orb
Ability: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 29 HP / 0 Atk / 30 SpA / 30 Spe
- Defog
- Draco Meteor
- Psyshock
- Hidden Power [Fire]

Houndoom @ Houndoominite
Ability: Flash Fire
EVs: 40 HP / 216 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Nasty Plot
- Fire Blast
- Dark Pulse
- Will-O-Wisp

Landorus-Therian (M) @ Rocky Helmet
Ability: Intimidate
EVs: 248 HP / 48 Atk / 192 Def / 20 Spe
Impish Nature
- Stealth Rock
- Earthquake
- Stone Edge
- U-turn

Whimsicott @ Lagging Tail
Ability: Prankster
EVs: 252 HP / 252 Def / 4 SpD
Impish Nature
- Encore
- Taunt
- Stun Spore
- U-turn