Sleep Clause You may only put one Pokemon to sleep at a time. Once that Pokemon wakes up, you may put it or another Pokemon to sleep again. But again, only one Pokemon on their team can be asleep at one time. Pokemon asleep due to the effects of Rest or Effect Spore do NOT count towards that limit.
Species Clause Each Pokemon must be of a different species. Different Pokedex number means it's a different species.
Evasion Clause and OHKO Ban Sometimes grouped together as "No DT/OHKO". The following moves are banned:
Non-Standard Rules that are sometimes used The following rules aren't included as standard. However, they are quite popular among many users and make for a different style of play. If they are stated alongside the standard rules, remember to abide by them.
Item Clause By far the most common non-standard rule, item clause states that each Pokemon on the team must be holding a different item from one another. So no double leftovers or focus sash. Items that do the same thing but aren't the same, such as leftovers and black sludge, are allowed.
No "Hax" Items The following items are banned: - Brightpowder - Quick Claw - Focus Band - King's Rock
Self-KO Clause This mostly only applies to tournaments. It's used to break ties. If both players are down to their last Pokemon and one uses a move that kills itself, such as Explosion, Self-Destruct, Destiny Bond, or Memento, the trainer who used that move is considered the loser in the match.
Freeze Clause Only used in a controlled environment such as Pokemon Battle Revolution, Shoddy Battle, or the upcoming Shoddy Battle 2. Only one Pokemon may be frozen at the same time as another. Once one unfreezes, that Pokemon or another may be put back to sleep.