These clauses are used in case of misfortune. Most of these clauses relate in some way to whether an attack succeeds or fails, but there are a couple of more general condition clauses that can be used here. Chance clauses are triggered if a certain circunstance happened or if the situation is in a particular manner when the pokemon is to act. Examples of Chances clauses are:
- If the remaining HP of Pokemon X is less than/equal to/greater than/at least/at most Y, do Z
- If the remaining energy of Pokemon X is less than/equal to/greater than/at least/at most Y, do Z
- If attack X misses, do Y
- If attack X lands a critical hit, do Y
- If attack X's secondary effect Y (such as burn or flinch) occurs, do Z
- If you currently have condition X (such as being asleep, burned or taunted), do Y (note: a specific condition must be named)
- If Pokemon X fails to act (because, for example, you hit yourself in confusion or are fully paralyzed), do Y
- If your stat X is at stage Y (or higher/lower), do Z
- If other substitution(s) X do(es) not activate, do Y
Note that if the action that is being changed is the action when the chance-based effect like full paralysis, secondary hit activation or miss occurs, the new move's priority must be less than or equal to that of the move being replaced. Also, NOT can be used with chance clauses.