AttackQuick Attack
Flip a coin. If heads, this attack does 10 damage plus 20 more damage; if tails, this attack does 10 damage.

Jungle is a set in the Base series. It was released on 16 June 1999. The printed size is 64, and the checklist is the same length. Jolteon is 4/64, in position 4 of 64 on this checklist. Before it is 3 Flareon, and after it is 5 Kangaskhan. The listed rarity is Rare Holo.
Jolteon is a Stage 1 Lightning Pokémon with 70 HP. The card lists level 29. In the Pokédex this is Jolteon (#135), generation 1 (Kanto). The card says it evolves from Eevee. In this catalog that name is Eevee (#133).
Kagemaru Himeno illustrated this card. The same name is on 656 other cards in the catalog.
Jolteon (#135) has 38 other cards in the catalog. Those other cards are in 29 sets. The other printings with a release date run from 1999 to 2025. The earliest other card is Jolteon 20/64 in Jungle (1999). Both list 70 HP. The rarity there is Rare, and here it is Rare Holo. 27 other cards of Jolteon list a different HP.
The attack Quick Attack lists 10+ damage. The cost is Colorless, Colorless. Flip a coin. If heads, this attack does 10 damage plus 20 more damage; if tails, this attack does 10 damage. Pin Missile is another attack lists 20× damage. The cost is Lightning, Lightning, Colorless. Flip 4 coins. This attack does 20 damage times the number of heads. Weakness is Fighting ×2. Retreat cost is 1. The flavor text reads "It accumulates negative ions from the atmosphere to blast out 10,000-volt lightning bolts."
I keep a set binder for Jungle, meant to hold every card of that set. This card is one slot in the Jungle set binder. 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.
Flip a coin. If heads, this attack does 10 damage plus 20 more damage; if tails, this attack does 10 damage.
Flip 4 coins. This attack does 20 damage times the number of heads.
It accumulates negative ions from the atmosphere to blast out 10,000-volt lightning bolts.
Jungle, in the Base series. It was released on 16 June 1999. The printed size is 64.
4/64. It is entry 4 of 64 in this checklist.
Kagemaru Himeno. The catalog lists 656 other cards with that illustrator.
Rare Holo.
Jolteon #135, generation 1 (Kanto).
Quick Attack (10+) and Pin Missile (20×).