* Different Sets, Different Rarities: Pokemon cards are printed in various sets, and the rarity of a card within a set can vary significantly. For example, a Magneton from the "Base Set" might be common, while a Magneton from the "Shining Fates" set might be much rarer.
* Rarity Symbols: To determine a card's rarity, look for rarity symbols (like stars, circles, diamonds, etc.) on the card. More symbols usually mean rarer.
* Specific Card Variations: Even within a set, there can be variations in the rarity of a specific card. For example, a holographic Magneton might be rarer than a non-holographic Magneton in the same set.
To know if your specific Magneton card is rare, you need to tell me the following:
* What set is the card from?
* What rarity symbol(s) does the card have?
* Is it a holographic card?
Once you provide this information, I can help you determine the rarity of your Magneton card.