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
Hax means Luck Based.
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 Competitor. Only one Pokemon may be frozen at the same time as another. Once one unfreezes, that Pokemon or another may be put back to freeze.
No Legends
Commonly used by people who think non uber legends are un beatable.