AbilityUndevelop
Once during your turn (before your attack), you may devolve Vaporeon and put Vaporeon into your hand. This power can't be used if Vaporeon is affected by a Special Condition.

Rising Rivals is a set in the Platinum series. It was released on May 16, 2009. The printed size is 111. This checklist is longer, at 120 cards. Vaporeon is 34/111, in position 34 of 120 on this checklist. Before it is 33 Snorlax, and after it is 35 Vespiquen E4. The listed rarity is Rare.
Vaporeon is a Stage 1 Water Pokémon with 90 HP. The card lists level 48. In the Pokédex this is Vaporeon (#134), generation 1 (Kanto). The card says it evolves from Eevee. In this catalog that name is Eevee (#133).
Masakazu Fukuda illustrated this card. The same name is on 471 other cards in the catalog.
Vaporeon (#134) has 36 other cards in the catalog. Those other cards are in 27 sets. The other printings with a release date run from 1999 to 2025. The earliest other card is Vaporeon 12/64 in Jungle (1999). That card lists 80 HP, and this one lists 90 HP. The rarity there is Rare Holo, and here it is Rare. Kagemaru Himeno illustrated that card, and Masakazu Fukuda illustrated this one. Retreat cost there is 1, and here it is 2. 32 other cards of Vaporeon list a different HP.
Undevelop is listed as Poké-Power. Once during your turn (before your attack), you may devolve Vaporeon and put Vaporeon into your hand. This power can't be used if Vaporeon is affected by a Special Condition. The attack Muddy Water lists 20 damage. The cost is Colorless. Does 10 damage to 1 of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.) Evolving Aqua is another attack lists no damage number. The cost is Water, Colorless. Choose 1 of your opponent's Pokémon that has any damage counters on it. This attack does 40 damage to that Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.) If Vaporeon evolved from Eevee during this turn, this attack does 60 damage instead. Weakness is Lightning +20. Retreat cost is 2.
I keep a set binder for Rising Rivals, meant to hold every card of that set. This card is one slot in the Rising Rivals set binder. A generation binder holds one card of each species. Vaporeon 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 (before your attack), you may devolve Vaporeon and put Vaporeon into your hand. This power can't be used if Vaporeon is affected by a Special Condition.
Does 10 damage to 1 of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)
Choose 1 of your opponent's Pokémon that has any damage counters on it. This attack does 40 damage to that Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.) If Vaporeon evolved from Eevee during this turn, this attack does 60 damage instead.
Rising Rivals, in the Platinum series. It was released on May 16, 2009. The printed size is 111.
34/111. It is entry 34 of 120 in this checklist.
Masakazu Fukuda. The catalog lists 471 other cards with that illustrator.
Rare.
Vaporeon #134, generation 1 (Kanto).
Muddy Water (20) and Evolving Aqua.