AttackWhirlwind
If your opponent has any Benched Pokémon, he or she chooses 1 of them and switches it with the Defending Pokémon. (Do the damage before switching the Pokémon.)

Butterfree is Pokédex #012, generation 1 (Kanto). Butterfree is a Stage 2 Grass Pokémon with 70 HP. The card lists level 28. The card says it evolves from Metapod. In this catalog that name is Metapod (#011).
Butterfree sits at 34/130 in Base Set 2, position 34 of 130. Before it is 33 Arcanine, and after it is 35 Charmeleon. 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 Whirlwind lists 20 damage. The cost is Colorless, Colorless. If your opponent has any Benched Pokémon, he or she chooses 1 of them and switches it with the Defending Pokémon. (Do the damage before switching the Pokémon.) Mega Drain is another attack lists 40 damage. The cost is Grass, Grass, Grass, Grass. Remove a number of damage counters from Butterfree equal to half the damage done to the Defending Pokémon (after applying Weakness and Resistance) (rounded up to the nearest 10). If Butterfree has fewer damage counters than that, remove all of them. Weakness is Fire ×2. Resistance is Fighting -30. The flavor text reads "In battle, it flaps its wings at high speed to release highly toxic dust into the air."
Butterfree (#012) has 24 other cards in the catalog. Those other cards are in 20 sets. The other printings with a release date run from 1999 to 2025. The earliest other card is Butterfree 33/64 in Jungle (1999). Both list 70 HP. Both list the rarity Uncommon. 22 other cards of Butterfree list a different HP.
The illustrator line reads Kagemaru Himeno. I count 656 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. Butterfree can fill a slot in Generation 1 binder (Kanto). I still need this card.
If your opponent has any Benched Pokémon, he or she chooses 1 of them and switches it with the Defending Pokémon. (Do the damage before switching the Pokémon.)
Remove a number of damage counters from Butterfree equal to half the damage done to the Defending Pokémon (after applying Weakness and Resistance) (rounded up to the nearest 10). If Butterfree has fewer damage counters than that, remove all of them.
In battle, it flaps its wings at high speed to release highly toxic dust into the air.
Base Set 2, in the Base series. It was released on February 24, 2000. The printed size is 130.
34/130. It is entry 34 of 130 in this checklist.
Kagemaru Himeno. The catalog lists 656 other cards with that illustrator.
Uncommon.
Butterfree #012, generation 1 (Kanto).
Whirlwind (20) and Mega Drain (40).