AttackSlow Trip Gas
At the end of your opponent's next turn, the Defending Pokémon is now Confused.

Gastly is Pokédex #092, generation 1 (Kanto). Gastly is a Basic Psychic Pokémon with 50 HP. The card lists Haunter, Haunter (#093) under evolves to.
Gastly sits at 63/112 in FireRed & LeafGreen, position 63 of 116. Before it is 62 Doduo, and after it is 64 Growlithe. The set belongs to the EX series. It was released on September 1, 2004. The printed size is 112. This checklist is longer, at 116 cards. The listed rarity is Common.
The attack Slow Trip Gas lists no damage number. The cost is Colorless. At the end of your opponent's next turn, the Defending Pokémon is now Confused. Weakness is Darkness ×2. Resistance is Fighting -30. Retreat cost is 1.
Gastly (#092) has 34 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 Gastly 50/102 in Base (1999). That card lists 30 HP, and this one lists 50 HP. Both list the rarity Common. Keiji Kinebuchi illustrated that card, and Ken Sugimori illustrated this one. 17 other cards of Gastly list a different HP.
The illustrator line reads Ken Sugimori. I count 1,112 other cards in the catalog with that illustrator.
FireRed & LeafGreen set binder is where a full FireRed & LeafGreen set goes. This card fills one slot there. A generation binder holds one card of each species. Gastly 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.
At the end of your opponent's next turn, the Defending Pokémon is now Confused.
FireRed & LeafGreen, in the EX series. It was released on September 1, 2004. The printed size is 112.
63/112. It is entry 63 of 116 in this checklist.
Ken Sugimori. The catalog lists 1,112 other cards with that illustrator.
Common.
Gastly #092, generation 1 (Kanto).
Slow Trip Gas.