AttackHydrocannon
Does 30 damage plus 20 more damage for each Water Energy attached to Dark Blastoise but not used to pay for this attack's Energy cost. You can't add more than 40 damage in this way.

Legendary Collection is a set in the Other series. It was released on May 24, 2002. The printed size is 110, and the checklist is the same length. Dark Blastoise is 4/110, in position 4 of 110 on this checklist. Before it is 3 Charizard, and after it is 5 Dark Dragonite. The listed rarity is Rare Holo.
Dark Blastoise is a Stage 2 Water Pokémon with 70 HP. The card lists level 28. In the Pokédex this is Blastoise (#009), generation 1 (Kanto). The card says it evolves from Dark Wartortle. In this catalog that name is Wartortle (#008).
Mitsuhiro Arita illustrated this card. The same name is on 721 other cards in the catalog.
Blastoise (#009) has 44 other cards in the catalog. Those other cards are in 26 sets. The other printings with a release date run from 1999 to 2024. The earliest other card is Blastoise 2/102 in Base (1999). That card is named Blastoise, while this one is Dark Blastoise. That card lists 100 HP, and this one lists 70 HP. Both list the rarity Rare Holo. Ken Sugimori illustrated that card, and Mitsuhiro Arita illustrated this one. Retreat cost there is 3, and here it is 2. 42 other cards of Blastoise list a different HP.
The attack Hydrocannon lists 30+ damage. The cost is Water, Water. Does 30 damage plus 20 more damage for each Water Energy attached to Dark Blastoise but not used to pay for this attack's Energy cost. You can't add more than 40 damage in this way. Rocket Tackle is another attack lists 40 damage. The cost is Water, Colorless, Colorless. Dark Blastoise does 10 damage to itself. Flip a coin. If heads, prevent all damage done to Dark Blastoise during your opponent's next turn. (Any other effects of attacks still happen.) Weakness is Lightning ×2. Retreat cost is 2. The flavor text reads "An aggressive Pokémon that tackles anything it sees."
I keep a set binder for Legendary Collection, meant to hold every card of that set. This card is one slot in the Legendary Collection set binder. A generation binder holds one card of each species. Blastoise can fill a slot in Generation 1 binder (Kanto). Themed lists that include this exact card are Mitsuhiro Arita cards and Team Rocket cards. I still need this card.
Does 30 damage plus 20 more damage for each Water Energy attached to Dark Blastoise but not used to pay for this attack's Energy cost. You can't add more than 40 damage in this way.
Dark Blastoise does 10 damage to itself. Flip a coin. If heads, prevent all damage done to Dark Blastoise during your opponent's next turn. (Any other effects of attacks still happen.)
An aggressive Pokémon that tackles anything it sees.
Legendary Collection, in the Other series. It was released on May 24, 2002. The printed size is 110.
4/110. It is entry 4 of 110 in this checklist.
Mitsuhiro Arita. The catalog lists 721 other cards with that illustrator.
Rare Holo.
Blastoise #009, generation 1 (Kanto).
Hydrocannon (30+) and Rocket Tackle (40).