AttackCounter
If an attack damages Wobbuffet during your opponent's next turn (even if Wobbuffet is Knocked Out), flip a coin. If heads, Wobbuffet attacks the Defending Pokémon for an equal amount of damage.

Neo Discovery is a set in the Neo series. It was released on June 1, 2001. The printed size is 75, and the checklist is the same length. Wobbuffet is 16/75, in position 16 of 75 on this checklist. Before it is 15 Ursaring, and after it is 17 Yanma. The listed rarity is Rare Holo.
Wobbuffet is a Basic Psychic Pokémon with 90 HP. The card lists level 46. In the Pokédex this is Wobbuffet (#202), generation 2 (Johto).
Hironobu Yoshida illustrated this card. The same name is on 38 other cards in the catalog.
Wobbuffet (#202) has 22 other cards in the catalog. Those other cards are in 21 sets. The other printings with a release date run from 2001 to 2025. The earliest other card is Wobbuffet 35/75 in Neo Discovery (2001). Both list 90 HP. The rarity there is Rare, and here it is Rare Holo. 18 other cards of Wobbuffet list a different HP.
The attack Counter lists no damage number. The cost is Psychic. If an attack damages Wobbuffet during your opponent's next turn (even if Wobbuffet is Knocked Out), flip a coin. If heads, Wobbuffet attacks the Defending Pokémon for an equal amount of damage. Weakness is Psychic ×2. Retreat cost is 3. The flavor text reads "To keep its pitch-black tail hidden, it lives quietly in the darkness. It is never first to attack."
I keep a set binder for Neo Discovery, meant to hold every card of that set. This card is one slot in the Neo Discovery set binder. A generation binder holds one card of each species. Wobbuffet can fill a slot in Generation 2 binder (Johto). I still need this card.
If an attack damages Wobbuffet during your opponent's next turn (even if Wobbuffet is Knocked Out), flip a coin. If heads, Wobbuffet attacks the Defending Pokémon for an equal amount of damage.
To keep its pitch-black tail hidden, it lives quietly in the darkness. It is never first to attack.
Neo Discovery, in the Neo series. It was released on June 1, 2001. The printed size is 75.
16/75. It is entry 16 of 75 in this checklist.
Hironobu Yoshida. The catalog lists 38 other cards with that illustrator.
Rare Holo.
Wobbuffet #202, generation 2 (Johto).
Counter.