AttackEvil Claw
If the Defending Pokémon is a Basic Pokémon, it can't attack during your opponent's next turn.
Scarlet & Violet Black Star Promos

Scarlet & Violet Black Star Promos is a set in the Scarlet & Violet series. It was released on January 1, 2023. The printed size is 102. This checklist is longer, at 165 cards. Houndoom ex is 103/102, in position 103 of 165 on this checklist. Before it is 102 Oddish, and after it is 104 Melmetal ex. The collector number is above the printed set size of 102. The listed rarity is Promo.
Houndoom ex is a Stage 1 ex Darkness Pokémon with 270 HP. In the Pokédex this is Houndoom (#229), generation 2 (Johto). The card says it evolves from Houndour. In this catalog that name is Houndour (#228).
PLANETA Tsuji illustrated this card. The same name is on 81 other cards in the catalog.
Houndoom (#229) has 44 other cards in the catalog. Those other cards are in 29 sets. The other printings with a release date run from 2001 to 2025. The earliest other card is Houndoom 4/75 in Neo Discovery (2001). That card is named Houndoom, while this one is Houndoom ex. That card lists 70 HP, and this one lists 270 HP. The rarity there is Rare Holo, and here it is Promo. Shin-ichi Yoshida illustrated that card, and PLANETA Tsuji illustrated this one. Retreat cost there is 1, and here it is 2. 43 other cards of Houndoom list a different HP.
The attack Evil Claw lists 90 damage. The cost is Darkness, Darkness. If the Defending Pokémon is a Basic Pokémon, it can't attack during your opponent's next turn. Hound's Fang is another attack lists 220 damage. The cost is Darkness, Darkness, Darkness. This Pokémon also does 30 damage to itself. Weakness is Grass ×2. Retreat cost is 2. The card text says: Pokémon ex rule: When your Pokémon ex is Knocked Out, your opponent takes 2 Prize cards. The regulation mark is G.
I keep a set binder for Scarlet & Violet Black Star Promos, meant to hold every card of that set. This card is one slot in the Scarlet & Violet Black Star Promos set binder. A generation binder holds one card of each species. Houndoom can fill a slot in Generation 2 binder (Johto). I still need this card.
If the Defending Pokémon is a Basic Pokémon, it can't attack during your opponent's next turn.
This Pokémon also does 30 damage to itself.
Pokémon ex rule: When your Pokémon ex is Knocked Out, your opponent takes 2 Prize cards.
Scarlet & Violet Black Star Promos, in the Scarlet & Violet series. It was released on January 1, 2023. The printed size is 102.
103/102. It is entry 103 of 165 in this checklist.
PLANETA Tsuji. The catalog lists 81 other cards with that illustrator.
Promo.
Houndoom #229, generation 2 (Johto).
G.
Evil Claw (90) and Hound's Fang (220).