During battle, Steel-Type Pokémon are unable to run or switch while the Pokémon that has Magnet Pull is in battle. Additionally, the opponent is unable to switch out on the same turn in which the Pokémon that has Magnet Pull is substituted out of battle. However, the opponent can still switch out using Baton Pass.
If a Pokémon with Magnet Pull is in the leading spot of the party, the chances of encountering a Steel-Type Pokémon in the Wild increases by 150%.
Pokémon With Magnet Pull