AbilityBoom Boom Groove
Once during your turn, if your Active Pokémon has the Festival Lead Ability, you may search your deck for a card and put it into your hand. Then, shuffle your deck.

Twilight Masquerade is a set in the Scarlet & Violet series. It was released on May 24, 2024. The printed size is 167. This checklist is longer, at 226 cards. Thwackey is 15/167, in position 15 of 226 on this checklist. Before it is 14 Grookey, and after it is 16 Rillaboom. The listed rarity is Common.
Thwackey is a Stage 1 Grass Pokémon with 100 HP. In the Pokédex this is Thwackey (#811), generation 8 (Galar). The card says it evolves from Grookey. In this catalog that name is Grookey (#810). The card lists Rillaboom, Rillaboom (#812) under evolves to.
GOSSAN illustrated this card. The same name is on 57 other cards in the catalog.
Thwackey (#811) has 6 other cards in the catalog. Those other cards are in 5 sets. The other printings with a release date run from 2020 to 2023. The earliest other card is Thwackey 12/202 in Sword & Shield (2020). Both list 100 HP. The rarity there is Uncommon, and here it is Common. Megumi Mizutani illustrated that card, and GOSSAN illustrated this one. The regulation mark there is D, and here it is H. 2 other cards of Thwackey list a different HP.
Boom Boom Groove is listed as Ability. Once during your turn, if your Active Pokémon has the Festival Lead Ability, you may search your deck for a card and put it into your hand. Then, shuffle your deck. The attack Beat lists 50 damage. The cost is Grass, Grass. Weakness is Fire ×2. Retreat cost is 2. The flavor text reads "The faster a Thwackey can beat out a rhythm with its two sticks, the more respect it wins from its peers." The regulation mark is H.
I keep a set binder for Twilight Masquerade, meant to hold every card of that set. This card is one slot in the Twilight Masquerade set binder. A generation binder holds one card of each species. Thwackey can fill a slot in Generation 8 binder (Galar). I still need this card.
Once during your turn, if your Active Pokémon has the Festival Lead Ability, you may search your deck for a card and put it into your hand. Then, shuffle your deck.
The faster a Thwackey can beat out a rhythm with its two sticks, the more respect it wins from its peers.
Twilight Masquerade, in the Scarlet & Violet series. It was released on May 24, 2024. The printed size is 167.
15/167. It is entry 15 of 226 in this checklist.
GOSSAN. The catalog lists 57 other cards with that illustrator.
Common.
Thwackey #811, generation 8 (Galar).
H.
Beat (50).