If an opponent causes a burn, paralysis, or poisoning of a Pokémon with Synchronize, the opponent also receives the same status condition. Self-inflicted status conditions (such as those from items) are not passed on.
In Generations 3-4, bad poison (toxic) is passed on as regular poison.
If a Pokémon with Synchronize is the leading party Pokémon, there is a 50% chance that any wild Pokémon encountered will have the same nature.
