yea, and its not really OU is it?
where would you spend the EVs on? actually it's fast enough, so perhaps rather max out hp (and attack of course) instead of speed?
You want dugtrio to be a sweeper, so you basically go for speed and attack there are two optional sets, look below:
Dugtrio @ Choice Band
Ability: Arena Trap
Nature: Jolly (Out speeds adamant pokemon, such as meta)
EVs: 252 Atk / 252 Speed / 6 HP
Moveset:
- Earthquake
- Stone Edge / Rock Slide (For flinchhax and accuracy)
- Aerial Ace
- Shadow Claw / Night Slash (As a surprise to ghosts and/or darks such as weavile) / Pursuit
You may ask, why is pursuit there, well that is because pokemon with the levitate ability are immune to arena trap, so any azelfs will be owned by pursuit.
OR
Dugtrio @ Choice Band
Ability: Arena Trap
Nature: Jolly (Out speeds adamant pokemon, such as meta)
EVs: 252 Atk / 200 Speed (As nature is +Spd) / 58 HP
Moveset:
- Earthquake
- Stone Edge / Rock Slide
- Aerial Ace
- Shadow Claw / Night Slash / Pursuit