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Oh, so THAT'S why her body is broom-shaped. I get it now!
But why are people dumping Speed EVs into this thing? It won't outspeed anything important and HP would add to its bulk.
What about as a revenge killer?
Revenge Roach
Pheromosa @ Expert Belt/Wide Lens
Adamant/Naughty 252 Atk, 4 SpA, 252 Spe
U-Turn
HJK
Ice Beam
Poison Jab/Return/Lunge
This turns Beast Boost into Moxie while still carrying a 401 Speed stat.