AbilityShadow Hunt
This Pokémon can use the attacks of any Basic Pokémon in your discard pile. (You still need the necessary Energy to use each attack.)

Burning Shadows is a set in the Sun & Moon series. It was released on August 5, 2017. The printed size is 147. This checklist is longer, at 177 cards. Marshadow-GX is 80/147, in position 82 of 177 on this checklist. Before it is 79 Passimian, and after it is 81 Alolan Rattata. The listed rarity is Rare Holo GX.
Marshadow-GX is a Basic GX Fighting Pokémon with 150 HP. In the Pokédex this is Marshadow (#802), generation 7 (Alola).
5ban Graphics illustrated this card. The same name is on 1,629 other cards in the catalog.
Marshadow (#802) has 16 other cards in the catalog. Those other cards are in 8 sets. The other printings with a release date run from 2017 to 2026. The earliest other card is Marshadow-GX SM59/248 in SM Black Star Promos (2017). Both list 150 HP. The rarity there is Promo, and here it is Rare Holo GX. 13 other cards of Marshadow list a different HP.
Shadow Hunt is listed as Ability. This Pokémon can use the attacks of any Basic Pokémon in your discard pile. (You still need the necessary Energy to use each attack.) The attack Beatdown lists 120 damage. The cost is Fighting, Fighting, Colorless. Peerless Hundred Blows-GX is another attack lists 50× damage. The cost is Fighting. This attack does 50 damage times the amount of basic Energy attached to this Pokémon. (You can't use more than 1 GX attack in a game.) Weakness is Psychic ×2. Retreat cost is 1. 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 Burning Shadows, meant to hold every card of that set. This card is one slot in the Burning Shadows set binder. A generation binder holds one card of each species. Marshadow can fill a slot in Generation 7 binder (Alola). I still need this card.
This Pokémon can use the attacks of any Basic Pokémon in your discard pile. (You still need the necessary Energy to use each attack.)
This attack does 50 damage times the amount of basic Energy attached to this 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.
Burning Shadows, in the Sun & Moon series. It was released on August 5, 2017. The printed size is 147.
80/147. It is entry 82 of 177 in this checklist.
5ban Graphics. The catalog lists 1,629 other cards with that illustrator.
Rare Holo GX.
Marshadow #802, generation 7 (Alola).
Beatdown (120) and Peerless Hundred Blows-GX (50×).