AttackOverrun
Choose 1 of your opponent's Benched Pokémon. This attack does 10 damage to that Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)

Mightyena is Pokédex #262, generation 3 (Hoenn). Team Magma's Mightyena is a Stage 1 Darkness Pokémon with 70 HP. The card says it evolves from Team Magma's Poochyena. In this catalog that name is Poochyena (#261).
Team Magma's Mightyena sits at 21/95 in Team Magma vs Team Aqua, position 21 of 97. Before it is 20 Team Magma's Lairon, and after it is 22 Team Magma's Rhydon. The set belongs to the EX series. It was released on March 1, 2004. The printed size is 95. This checklist is longer, at 97 cards. The listed rarity is Rare.
The attack Overrun lists 10 damage. The cost is Fighting. Choose 1 of your opponent's Benched Pokémon. This attack does 10 damage to that Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.) Bite Off is another attack lists 40+ damage. The cost is Darkness, Colorless, Colorless. If the Defending Pokémon is Pokémon-ex, this attack does 40 damage plus 40 more damage. Weakness is Fighting ×2. Resistance is Psychic -30. Retreat cost is 1.
Mightyena (#262) has 23 other cards in the catalog. Those other cards are in 18 sets. The other printings with a release date run from 2003 to 2026. The earliest other card is Mightyena 10/109 in Ruby & Sapphire (2003). That card is named Mightyena, while this one is Team Magma's Mightyena. Both list 70 HP. The rarity there is Rare Holo, and here it is Rare. Atsuko Nishida illustrated that card, and Shin-ichi Yoshikawa illustrated this one. 17 other cards of Mightyena list a different HP.
The illustrator line reads Shin-ichi Yoshikawa. I count 50 other cards in the catalog with that illustrator.
Team Magma vs Team Aqua set binder is where a full Team Magma vs Team Aqua set goes. This card fills one slot there. A generation binder holds one card of each species. Mightyena can fill a slot in Generation 3 binder (Hoenn). Themed lists that include this exact card are Trainer's Pokémon and Team Aqua and Team Magma. I still need this card.
Choose 1 of your opponent's Benched Pokémon. This attack does 10 damage to that Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)
If the Defending Pokémon is Pokémon-ex, this attack does 40 damage plus 40 more damage.
Team Magma vs Team Aqua, in the EX series. It was released on March 1, 2004. The printed size is 95.
21/95. It is entry 21 of 97 in this checklist.
Shin-ichi Yoshikawa. The catalog lists 50 other cards with that illustrator.
Rare.
Mightyena #262, generation 3 (Hoenn).
Overrun (10) and Bite Off (40+).