AttackHeadlock
Flip a coin. If heads, this attack does 30 more damage. If tails, your opponent's Active Pokémon is now Paralyzed.

Cloyster is Pokédex #091, generation 1 (Kanto). Cloyster is a Stage 1 Water Pokémon with 120 HP. The card says it evolves from Shellder. In this catalog that name is Shellder (#090).
Cloyster sits at 34/149 in Sun & Moon, position 34 of 173. Before it is 33 Shellder, and after it is 35 Lapras-GX. The set belongs to the Sun & Moon series. It was released on February 3, 2017. The printed size is 149. This checklist is longer, at 173 cards. The listed rarity is Rare.
The attack Headlock lists 30+ damage. The cost is Water, Colorless. Flip a coin. If heads, this attack does 30 more damage. If tails, your opponent's Active Pokémon is now Paralyzed. Guard Press is another attack lists 80 damage. The cost is Water, Water, Colorless. During your opponent's next turn, this Pokémon takes 20 less damage from attacks (after applying Weakness and Resistance). Weakness is Grass ×2. Retreat cost is 3. The flavor text reads "Its hard shell cannot be shattered—not even by a bomb. The contents of the shell remain unknown."
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 1999 to 2023. The earliest other card is Cloyster 32/62 in Fossil (1999). That card lists 50 HP, and this one lists 120 HP. The rarity there is Uncommon, and here it is Rare. Kagemaru Himeno illustrated that card, and Yoshinobu Saito illustrated this one. Retreat cost there is 2, and here it is 3. 13 other cards of Cloyster list a different HP.
The illustrator line reads Yoshinobu Saito. I count 61 other cards in the catalog with that illustrator.
Sun & Moon set binder is where a full Sun & Moon set goes. This card fills one slot there. 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, this attack does 30 more damage. If tails, your opponent's Active Pokémon is now Paralyzed.
During your opponent's next turn, this Pokémon takes 20 less damage from attacks (after applying Weakness and Resistance).
Its hard shell cannot be shattered—not even by a bomb. The contents of the shell remain unknown.
Sun & Moon, in the Sun & Moon series. It was released on February 3, 2017. The printed size is 149.
34/149. It is entry 34 of 173 in this checklist.
Yoshinobu Saito. The catalog lists 61 other cards with that illustrator.
Rare.
Cloyster #091, generation 1 (Kanto).
Headlock (30+) and Guard Press (80).