AbilityYellow Ray
Once during your turn, when you put Jolteon Star from your hand onto your Bench, you may put 1 damage counter on each Active Pokémon (both yours and your opponent's).

Jolteon is Pokédex #135, generation 1 (Kanto). Jolteon ★ is a Basic Star Lightning Pokémon with 70 HP.
Jolteon ★ sits at 101/108 in Power Keepers, position 101 of 108. Before it is 100 Flareon ★, and after it is 102 Vaporeon ★. The set belongs to the EX series. It was released on February 2, 2007. The printed size is 108, and the checklist is the same length. The listed rarity is Rare Holo Star.
Yellow Ray is listed as Poké-Power. Once during your turn, when you put Jolteon Star from your hand onto your Bench, you may put 1 damage counter on each Active Pokémon (both yours and your opponent's). The attack Agility lists 40 damage. The cost is Lightning, Lightning, Colorless. Flip a coin. If heads, prevent all effects of an attack, including damage, done to Jolteon Star during your opponent's next turn. Weakness is Fighting ×2. Resistance is Metal -30. Retreat cost is 1. The card text says: You can't have more than 1 Pokémon Star in your deck.
Jolteon (#135) has 38 other cards in the catalog. Those other cards are in 28 sets. The other printings with a release date run from 1999 to 2025. The earliest other card is Jolteon 4/64 in Jungle (1999). That card is named Jolteon, while this one is Jolteon ★. Both list 70 HP. The rarity there is Rare Holo, and here it is Rare Holo Star. Kagemaru Himeno illustrated that card, and Masakazu Fukuda illustrated this one. 27 other cards of Jolteon list a different HP.
The illustrator line reads Masakazu Fukuda. I count 471 other cards in the catalog with that illustrator.
Power Keepers set binder is where a full Power Keepers set goes. This card fills one slot there. A generation binder holds one card of each species. Jolteon can fill a slot in Generation 1 binder (Kanto). Themed lists that include this exact card are Eevee and the Eeveelutions. I still need this card.
Once during your turn, when you put Jolteon Star from your hand onto your Bench, you may put 1 damage counter on each Active Pokémon (both yours and your opponent's).
Flip a coin. If heads, prevent all effects of an attack, including damage, done to Jolteon Star during your opponent's next turn.
You can't have more than 1 Pokémon Star in your deck.
Power Keepers, in the EX series. It was released on February 2, 2007. The printed size is 108.
101/108. It is entry 101 of 108 in this checklist.
Masakazu Fukuda. The catalog lists 471 other cards with that illustrator.
Rare Holo Star.
Jolteon #135, generation 1 (Kanto).
Agility (40).