AbilityFlaming Shot
Once during your turn (before your attack), you may discard a Fire Energy card from your hand. If you do, put 2 damage counters on 1 of your opponent's Pokémon.

Cosmic Eclipse is a set in the Sun & Moon series. It was released on November 1, 2019. The printed size is 236. This checklist is longer, at 272 cards. Volcarona-GX is 213/236, in position 214 of 272 on this checklist. Before it is 212 Charizard & Braixen-GX, and after it is 214 Blastoise & Piplup-GX. The listed rarity is Rare Ultra.
Volcarona-GX is a Stage 1 GX Fire Pokémon with 210 HP. In the Pokédex this is Volcarona (#637), generation 5 (Unova). The card says it evolves from Larvesta. In this catalog that name is Larvesta (#636).
PLANETA Tsuji illustrated this card. The same name is on 81 other cards in the catalog.
Volcarona (#637) has 20 other cards in the catalog. Those other cards are in 16 sets. The other printings with a release date run from 2011 to 2025. The earliest other card is Volcarona BW40/101 in BW Black Star Promos (2011). That card is named Volcarona, while this one is Volcarona-GX. That card lists 110 HP, and this one lists 210 HP. The rarity there is Promo, and here it is Rare Ultra. Shin Nagasawa illustrated that card, and PLANETA Tsuji illustrated this one. 16 other cards of Volcarona list a different HP.
Flaming Shot is listed as Ability. Once during your turn (before your attack), you may discard a Fire Energy card from your hand. If you do, put 2 damage counters on 1 of your opponent's Pokémon. The attack Backfire lists 160 damage. The cost is Fire, Fire, Colorless. Put 2 Fire Energy attached to this Pokémon into your hand. Massive Heat Wave-GX is another attack lists no damage number. The cost is Fire. Discard an Energy from each of your opponent's Pokémon. (You can't use more than 1 GX attack in a game.) Weakness is Water ×2. Retreat cost is 3. The card text says: Pokémon-GX rule: When your Pokémon-GX is Knocked Out, your opponent takes 2 Prize cards.
I keep a set binder for Cosmic Eclipse, meant to hold every card of that set. This card is one slot in the Cosmic Eclipse set binder. A generation binder holds one card of each species. Volcarona can fill a slot in Generation 5 binder (Unova). I still need this card.
Once during your turn (before your attack), you may discard a Fire Energy card from your hand. If you do, put 2 damage counters on 1 of your opponent's Pokémon.
Put 2 Fire Energy attached to this Pokémon into your hand.
Discard an Energy from each of your opponent's Pokémon. (You can't use more than 1 GX attack in a game.)
Pokémon-GX rule: When your Pokémon-GX is Knocked Out, your opponent takes 2 Prize cards.
Cosmic Eclipse, in the Sun & Moon series. It was released on November 1, 2019. The printed size is 236.
213/236. It is entry 214 of 272 in this checklist.
PLANETA Tsuji. The catalog lists 81 other cards with that illustrator.
Rare Ultra.
Volcarona #637, generation 5 (Unova).
Backfire (160) and Massive Heat Wave-GX.