AttackPain Amplifier
Put a damage counter on each of your opponent's Pokémon has already has any damage counters on it.

Gym Heroes is a set in the Gym series. It was released on 14 August 2000. The printed size is 132, and the checklist is the same length. Sabrina's Gengar is 14/132, in position 14 of 132 on this checklist. Before it is 13 Rocket's Scyther, and after it is 15 Brock. The listed rarity is Rare Holo.
Sabrina's Gengar is a Stage 2 Psychic Pokémon with 80 HP. The card lists level 39. In the Pokédex this is Gengar (#094), generation 1 (Kanto). The card says it evolves from Sabrina's Haunter. In this catalog that name is Haunter (#093).
Ken Sugimori illustrated this card. The same name is on 1,112 other cards in the catalog.
Gengar (#094) has 52 other cards in the catalog. Those other cards are in 34 sets. The other printings with a release date run from 1999 to 2026. The earliest other card is Gengar 5/62 in Fossil (1999). That card is named Gengar, while this one is Sabrina's Gengar. Both list 80 HP. Both list the rarity Rare Holo. Keiji Kinebuchi illustrated that card, and Ken Sugimori illustrated this one. 49 other cards of Gengar list a different HP.
The attack Pain Amplifier lists no damage number. The cost is Psychic. Put a damage counter on each of your opponent's Pokémon has already has any damage counters on it. Call of the Night is another attack lists 40 damage. The cost is Psychic, Psychic, Psychic. Unless this attack Knocks Out the Defending Pokémon, flip 2 coins. If both of them are heads, your opponent shuffles his or her Active Pokémon and all cards attached to it into his or her deck. Resistance is Fighting -30. Retreat cost is 1.
I keep a set binder for Gym Heroes, meant to hold every card of that set. This card is one slot in the Gym Heroes set binder. A generation binder holds one card of each species. Gengar can fill a slot in Generation 1 binder (Kanto). Themed lists that include this exact card are Gengar and the Gastly line, Trainer's Pokémon, Kanto Gym Leaders and their Pokémon, and Sabrina and her Pokémon. I still need this card.
Put a damage counter on each of your opponent's Pokémon has already has any damage counters on it.
Unless this attack Knocks Out the Defending Pokémon, flip 2 coins. If both of them are heads, your opponent shuffles his or her Active Pokémon and all cards attached to it into his or her deck.
Gym Heroes, in the Gym series. It was released on 14 August 2000. The printed size is 132.
14/132. It is entry 14 of 132 in this checklist.
Ken Sugimori. The catalog lists 1,112 other cards with that illustrator.
Rare Holo.
Gengar #094, generation 1 (Kanto).
Pain Amplifier and Call of the Night (40).