AbilityVoltage Beat
Once during your turn, you may search your deck for up to 2 Grass Energy cards and attach them to 1 of your Pokémon. Then, shuffle your deck.

Rillaboom is Pokédex #812, generation 8 (Galar). Rillaboom is a Stage 2 Grass Pokémon with 170 HP. The card says it evolves from Thwackey. In this catalog that name is Thwackey (#811).
Rillaboom sits at SWSH006/307 in SWSH Black Star Promos, position 6 of 304. Before it is SWSH005 Meowth VMAX, and after it is SWSH007 Frosmoth. The set belongs to the Sword & Shield series. It was released on 15 November 2019. The printed size is 307. This checklist is longer, at 304 cards. The listed rarity is Promo.
Voltage Beat is listed as Ability. Once during your turn, you may search your deck for up to 2 Grass Energy cards and attach them to 1 of your Pokémon. Then, shuffle your deck. The attack Hammer In lists 140 damage. The cost is Grass, Grass, Grass, Colorless. Weakness is Fire ×2. Retreat cost is 3. The flavor text reads "By drumming, it taps into the power of its special tree stump. The roots of the stump follow its direction in battle." The regulation mark is D.
Rillaboom (#812) has 17 other cards in the catalog. Those other cards are in 9 sets. The other printings with a release date run from 2019 to 2024. The earliest other card is Rillaboom V SWSH014/307 in SWSH Black Star Promos (2019). That card is named Rillaboom V, while this one is Rillaboom. That card lists 220 HP, and this one lists 170 HP. Both list the rarity Promo. 5ban Graphics illustrated that card, and Kouki Saitou illustrated this one. 13 other cards of Rillaboom list a different HP.
The illustrator line reads Kouki Saitou. I count 652 other cards in the catalog with that illustrator.
SWSH Black Star Promos set binder is where a full SWSH Black Star Promos set goes. This card fills one slot there. A generation binder holds one card of each species. Rillaboom can fill a slot in Generation 8 binder (Galar). Themed lists that include this exact card are Galar starters. I still need this card.
Once during your turn, you may search your deck for up to 2 Grass Energy cards and attach them to 1 of your Pokémon. Then, shuffle your deck.
By drumming, it taps into the power of its special tree stump. The roots of the stump follow its direction in battle.
SWSH Black Star Promos, in the Sword & Shield series. It was released on 15 November 2019. The printed size is 307.
SWSH006/307. It is entry 6 of 304 in this checklist.
Kouki Saitou. The catalog lists 652 other cards with that illustrator.
Promo.
Rillaboom #812, generation 8 (Galar).
D.
Hammer In (140).