Power Keepers is a set in the EX series. It was released on February 2, 2007. The printed size is 108, and the checklist is the same length. Magneton is 16/108, in position 16 of 108 on this checklist. Before it is 15 Lanturn, and after it is 17 Mawile. The listed rarity is Rare.
Magneton is a Stage 1 Lightning Pokémon with 70 HP. In the Pokédex this is Magneton (#082), generation 1 (Kanto). The card says it evolves from Magnemite. In this catalog that name is Magnemite (#081). The card lists Magnezone, Magnezone (#462) under evolves to.
Masakazu Fukuda illustrated this card. The same name is on 471 other cards in the catalog.
Magneton (#082) has 44 other cards in the catalog. Those other cards are in 33 sets. The other printings with a release date run from 1999 to 2025. The earliest other card is Magneton 9/102 in Base (1999). That card lists 60 HP, and this one lists 70 HP. The rarity there is Rare Holo, and here it is Rare. Keiji Kinebuchi illustrated that card, and Masakazu Fukuda illustrated this one. 34 other cards of Magneton list a different HP.
Magnetic Field is listed as Poké-Power. Once during your turn (before your attack), if you have basic Energy cards in your discard pile, you may discard any 1 card from your hand. Then search for up to 2 basic Energy cards from your discard pile, show them to your opponent, and put them into your hand. You can't return the card you first discarded to your hand in this way. This power can't be used if Magneton is affected by a Special Condition. The attack Magnetic Force lists 10× damage. The cost is Lightning, Colorless. Does 10 damage times the amount of Energy attached to all of your Pokémon (including Magneton). Weakness is Fighting ×2. Resistance is Metal -30. Retreat cost is 1.
I keep a set binder for Power Keepers, meant to hold every card of that set. This card is one slot in the Power Keepers set binder. A generation binder holds one card of each species. Magneton can fill a slot in Generation 1 binder (Kanto). I still need this card.