* In a 1v1 battle? Magnet is a pretty weak Pokémon, so a lot of types can beat it in a 1v1. Here are some good options:
* Fire-type: Fire is super effective against Steel-type, which Magnet is.
* Fighting-type: Fighting is super effective against Steel-type.
* Ground-type: Ground is super effective against Steel-type.
* Electric-type: Electric is not super effective, but it's still a good option, and Magnet is weak to it.
* In a larger battle? Things get more complicated. Magnet's weakness to the types above doesn't guarantee victory if you're facing multiple Pokémon. You'd need to consider things like:
* Your opponent's other Pokémon: If they have a Pokémon that counters your chosen type, you'll need to strategize to switch out.
* The terrain: Certain terrain can boost a Pokémon's attack power or lower a Pokémon's defense.
* The weather: Weather can have a similar effect to terrain.
* Your Pokémon's abilities and moves: Some abilities and moves can give you an advantage in battle.
To give you the best advice on how to "beat" Magnet, please tell me more about the situation. What kind of battle are you facing? What are the other Pokémon involved?