Species Clause - A player cannot have two of the same Pokémon on a team. This includes separate forms of Pokemon, such as Rotom.
Sleep Clause - A player may not put two of the opponent's Pokémon to sleep. If the opponent causes their own Pokémon to fall asleep, that does not fall under Sleep Clause.
Evasion Clause - A Pokémon cannot use Double Team or Minimize or hold the items Brightpowder or Lax Incense.
OHKO Clause - A Pokémon cannot use Fissure, Guillotine, Horn Drill, or Sheer Cold.
Its legal lol