Itt: we try to find some use for a decently good move with shit distribution.
Why does every dark type that gets Foul Play have good attack already?
Mismagius @Life orb/leftovers
Timid
Levitate
-Nasty Plot/Calm Mind
-Shadow Ball
-Dazzling Gleam
-Foul Play
252 Speed, 252 Sp Atk or Sp Def, 4 Sp Def or Sp Atk
Tank Special attacks as best as Mismagius can, use Foul Play to cover up Defensive weakness and punish physical Switch-ins or Mons that already managed to get Swords Dance up.