AttackHypnosis
The Defending Pokémon is now Asleep.

Haunter is Pokédex #093, generation 1 (Kanto). Haunter is a Stage 1 Psychic Pokémon with 60 HP. The card lists level 22. The card says it evolves from Gastly. In this catalog that name is Gastly (#092). The card lists Gengar, Gengar (#094) under evolves to.
Haunter sits at 43/130 in Base Set 2, position 43 of 130. Before it is 42 Growlithe, and after it is 44 Ivysaur. The set belongs to the Base series. It was released on February 24, 2000. The printed size is 130, and the checklist is the same length. The listed rarity is Uncommon.
The attack Hypnosis lists no damage number. The cost is Psychic. The Defending Pokémon is now Asleep. Dream Eater is another attack lists 50 damage. The cost is Psychic, Psychic. You can't use this attack unless the Defending Pokémon is Asleep. Resistance is Fighting -30. Retreat cost is 1. The flavor text reads "Because of its ability to slip through block walls, it is said to be from another dimension."
Haunter (#093) has 30 other cards in the catalog. Those other cards are in 28 sets. The other printings with a release date run from 1999 to 2026. The earliest other card is Haunter 29/102 in Base (1999). Both list 60 HP. Both list the rarity Uncommon. 29 other cards of Haunter list a different HP.
The illustrator line reads Keiji Kinebuchi. I count 212 other cards in the catalog with that illustrator.
Base Set 2 set binder is where a full Base Set 2 set goes. This card fills one slot there. A generation binder holds one card of each species. Haunter can fill a slot in Generation 1 binder (Kanto). Themed lists that include this exact card are Gengar and the Gastly line. I still need this card.
The Defending Pokémon is now Asleep.
You can't use this attack unless the Defending Pokémon is Asleep.
Because of its ability to slip through block walls, it is said to be from another dimension.
Base Set 2, in the Base series. It was released on February 24, 2000. The printed size is 130.
43/130. It is entry 43 of 130 in this checklist.
Keiji Kinebuchi. The catalog lists 212 other cards with that illustrator.
Uncommon.
Haunter #093, generation 1 (Kanto).
Hypnosis and Dream Eater (50).