AttackDoubleslap
Flip 2 coins. This attack does 10 damage times the number of heads.

Clefairy is Pokédex #035, generation 1 (Kanto). Clefairy is a Basic Colorless Pokémon with 50 HP. The card lists level 19. The card lists Clefable, Clefable (#036) under evolves to.
Clefairy sits at 30/111 in Neo Genesis, position 30 of 111. Before it is 29 Bayleef, and after it is 31 Croconaw. The set belongs to the Neo series. It was released on December 16, 2000. The printed size is 111, and the checklist is the same length. The listed rarity is Uncommon.
The attack Doubleslap lists 10× damage. The cost is Colorless, Colorless. Flip 2 coins. This attack does 10 damage times the number of heads. Squaredance is another attack lists no damage number. The cost is Colorless, Colorless, Colorless. Flip a number of coins equal to the total number of Pokémon in play. For each heads, you may search your deck for a basic Energy card, show it to your opponent, and put it into your hand. Shuffle your deck afterward. Weakness is Fighting ×2. Resistance is Psychic -30. Retreat cost is 1. The flavor text reads "The moonlight that it stores in the wings on its back apparently gives it the ability to float in midair."
Clefairy (#035) has 37 other cards in the catalog. Those other cards are in 30 sets. The other printings with a release date run from 1999 to 2026. The earliest other card is Clefairy 5/102 in Base (1999). That card lists 40 HP, and this one lists 50 HP. The rarity there is Rare Holo, and here it is Uncommon. Ken Sugimori illustrated that card, and Sumiyoshi Kizuki illustrated this one. 29 other cards of Clefairy list a different HP.
The illustrator line reads Sumiyoshi Kizuki. I count 212 other cards in the catalog with that illustrator.
Neo Genesis set binder is where a full Neo Genesis set goes. This card fills one slot there. A generation binder holds one card of each species. Clefairy can fill a slot in Generation 1 binder (Kanto). I still need this card.
Flip 2 coins. This attack does 10 damage times the number of heads.
Flip a number of coins equal to the total number of Pokémon in play. For each heads, you may search your deck for a basic Energy card, show it to your opponent, and put it into your hand. Shuffle your deck afterward.
The moonlight that it stores in the wings on its back apparently gives it the ability to float in midair.
Neo Genesis, in the Neo series. It was released on December 16, 2000. The printed size is 111.
30/111. It is entry 30 of 111 in this checklist.
Sumiyoshi Kizuki. The catalog lists 212 other cards with that illustrator.
Uncommon.
Clefairy #035, generation 1 (Kanto).
Doubleslap (10×) and Squaredance.