AttackClamp
Flip a coin. If heads, the Defending Pokémon is now Paralyzed. If tails, this attack does nothing (not even damage).

Fossil is a set in the Base series. It was released on October 10, 1999. The printed size is 62, and the checklist is the same length. Cloyster is 32/62, in position 32 of 62 on this checklist. Before it is 31 Arbok, and after it is 33 Gastly. The listed rarity is Uncommon.
Cloyster is a Stage 1 Water Pokémon with 50 HP. The card lists level 25. In the Pokédex this is Cloyster (#091), generation 1 (Kanto). The card says it evolves from Shellder. In this catalog that name is Shellder (#090).
Kagemaru Himeno illustrated this card. The same name is on 656 other cards in the catalog.
Cloyster (#091) has 13 other cards in the catalog. Those other cards are in 12 sets. The other printings with a release date run from 2000 to 2023. The earliest other card is Misty's Cloyster 29/132 in Gym Heroes (2000). That card is named Misty's Cloyster, while this one is Cloyster. That card lists 70 HP, and this one lists 50 HP. The rarity there is Rare, and here it is Uncommon. Ken Sugimori illustrated that card, and Kagemaru Himeno illustrated this one. 13 other cards of Cloyster list a different HP.
The attack Clamp lists 30 damage. The cost is Water, Water. Flip a coin. If heads, the Defending Pokémon is now Paralyzed. If tails, this attack does nothing (not even damage). Spike Cannon is another attack lists 30× damage. The cost is Water, Water. Flip 2 coins. This attack does 30 damage times the number of heads. Weakness is Lightning ×2. Retreat cost is 2. The flavor text reads "When attacked, it launches its horns in quick volleys. Its innards have never been seen."
I keep a set binder for Fossil, meant to hold every card of that set. This card is one slot in the Fossil set binder. A generation binder holds one card of each species. Cloyster can fill a slot in Generation 1 binder (Kanto). I still need this card.
Flip a coin. If heads, the Defending Pokémon is now Paralyzed. If tails, this attack does nothing (not even damage).
Flip 2 coins. This attack does 30 damage times the number of heads.
When attacked, it launches its horns in quick volleys. Its innards have never been seen.
Fossil, in the Base series. It was released on October 10, 1999. The printed size is 62.
32/62. It is entry 32 of 62 in this checklist.
Kagemaru Himeno. The catalog lists 656 other cards with that illustrator.
Uncommon.
Cloyster #091, generation 1 (Kanto).
Clamp (30) and Spike Cannon (30×).