AttackReflective Barrier
During your opponent's next turn, if this Pokémon is damaged by an attack (even if it is Knocked Out), put damage counters on the Attacking Pokémon equal to the damage done to this Pokémon.

151 is a set in the Scarlet & Violet series. It was released on September 22, 2023. The printed size is 165. This checklist is longer, at 207 cards. Mewtwo is 150/165, in position 150 of 207 on this checklist. Before it is 149 Dragonite, and after it is 151 Mew ex. The listed rarity is Rare.
Mewtwo is a Basic Psychic Pokémon with 130 HP. In the Pokédex this is Mewtwo (#150), generation 1 (Kanto).
AKIRA EGAWA illustrated this card. The same name is on 83 other cards in the catalog.
Mewtwo (#150) has 88 other cards in the catalog. Those other cards are in 41 sets. The other printings with a release date run from 1999 to 2026. The earliest other card is Mewtwo 10/102 in Base (1999). That card lists 60 HP, and this one lists 130 HP. The rarity there is Rare Holo, and here it is Rare. Ken Sugimori illustrated that card, and AKIRA EGAWA illustrated this one. Retreat cost there is 3, and here it is 2. 81 other cards of Mewtwo list a different HP.
The attack Reflective Barrier lists 20 damage. The cost is Colorless, Colorless. During your opponent's next turn, if this Pokémon is damaged by an attack (even if it is Knocked Out), put damage counters on the Attacking Pokémon equal to the damage done to this Pokémon. Psyslash is another attack lists 130 damage. The cost is Psychic, Psychic, Colorless. Discard 2 Energy from this Pokémon. Weakness is Darkness ×2. Resistance is Fighting -30. Retreat cost is 2. The flavor text reads "A Pokémon created by recombining Mew's genes. It's said to have the most savage heart among Pokémon." The regulation mark is G.
I keep a set binder for 151, meant to hold every card of that set. This card is one slot in the 151 set binder. A generation binder holds one card of each species. Mewtwo can fill a slot in Generation 1 binder (Kanto). I still need this card.
During your opponent's next turn, if this Pokémon is damaged by an attack (even if it is Knocked Out), put damage counters on the Attacking Pokémon equal to the damage done to this Pokémon.
Discard 2 Energy from this Pokémon.
A Pokémon created by recombining Mew's genes. It's said to have the most savage heart among Pokémon.
151, in the Scarlet & Violet series. It was released on September 22, 2023. The printed size is 165.
150/165. It is entry 150 of 207 in this checklist.
AKIRA EGAWA. The catalog lists 83 other cards with that illustrator.
Rare.
Mewtwo #150, generation 1 (Kanto).
G.
Reflective Barrier (20) and Psyslash (130).