AttackEruption
Each player discard the top card of his or her deck. This attack does 20 damage plus 20 more damage for each Fire Energy card discarded in this way.

Skyridge is a set in the E-Card series. It was released on May 12, 2003. The printed size is 144. This checklist is longer, at 182 cards. Magcargo is H16/144, in position 166 of 182 on this checklist. Before it is H15 Machamp, and after it is H17 Magcargo. The listed rarity is Rare Holo.
Magcargo is a Stage 1 Fire Pokémon with 80 HP. In the Pokédex this is Magcargo (#219), generation 2 (Johto). The card says it evolves from Slugma. In this catalog that name is Slugma (#218).
Hajime Kusajima illustrated this card. The same name is on 206 other cards in the catalog.
Magcargo (#219) has 29 other cards in the catalog. Those other cards are in 21 sets. The other printings with a release date run from 2001 to 2026. The earliest other card is Magcargo 33/64 in Neo Revelation (2001). Both list 80 HP. The rarity there is Uncommon, and here it is Rare Holo. Shin-ichi Yoshida illustrated that card, and Hajime Kusajima illustrated this one. 21 other cards of Magcargo list a different HP.
The attack Eruption lists 20+ damage. The cost is Colorless, Colorless. Each player discard the top card of his or her deck. This attack does 20 damage plus 20 more damage for each Fire Energy card discarded in this way. Fire Stream is another attack lists 60 damage. The cost is Fire, Fire, Colorless, Colorless. Discard a Fire Energy card attached to Magcargo in order to use this attack. If your opponent has any Benched Pokémon, this attack does 10 damage to each of them. (Don't apply Weakness and Resistance for Benched Pokémon.) Weakness is Water ×2. Retreat cost is 3.
I keep a set binder for Skyridge, meant to hold every card of that set. This card is one slot in the Skyridge set binder. A generation binder holds one card of each species. Magcargo can fill a slot in Generation 2 binder (Johto). I still need this card.
Each player discard the top card of his or her deck. This attack does 20 damage plus 20 more damage for each Fire Energy card discarded in this way.
Discard a Fire Energy card attached to Magcargo in order to use this attack. If your opponent has any Benched Pokémon, this attack does 10 damage to each of them. (Don't apply Weakness and Resistance for Benched Pokémon.)
Skyridge, in the E-Card series. It was released on May 12, 2003. The printed size is 144.
H16/144. It is entry 166 of 182 in this checklist.
Hajime Kusajima. The catalog lists 206 other cards with that illustrator.
Rare Holo.
Magcargo #219, generation 2 (Johto).
Eruption (20+) and Fire Stream (60).