OU Mega Houndoom

Houndoom-Mega @ Houndoominite
Ability: Flash Fire
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk / 30 Def
- Dark Pulse
- Flamethrower
- Nasty Plot
- Hidden Power [Ice]

Slowbro @ Leftovers
Ability: Regenerator
EVs: 252 HP / 4 SpA / 252 SpD
Calm Nature
IVs: 0 Atk
- Scald
- Thunder Wave
- Slack Off
- Psyshock

Latios (M) @ Choice Scarf
Ability: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Draco Meteor
- Psyshock
- Recover
- Trick

Skarmory @ Rocky Helmet
Ability: Sturdy
EVs: 184 HP / 208 Def / 116 Spe
Impish Nature
- Spikes
- Whirlwind
- Roost
- Iron Head

Garchomp @ Leftovers
Ability: Rough Skin
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Substitute
- Dragon Claw
- Earthquake
- Swords Dance

Excadrill @ Leftovers
Ability: Mold Breaker
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Earthquake
- Iron Head
- Rapid Spin
- Stealth Rock