what is a promo card in pokemon The History of 1996-1998 Full Pokemon TCG Pocket Promo

There are always some chase card(s) from a new set, whether it is an overpowered monstrosity, just a memorable throwback, or a strict upgrade to a prior card

[25] Oathbreaker [edit] In March 2023, Wizards of the Coast officially launched the Oathbreaker format, which originated as a fan-created variation of Commander

Unholy Annex // Ritual Chamber [Duskmourn: House of Horror] Set: Duskmourn: House of Horror Type: Enchantment Room // Enchantment Rarity: Rare

also a way to tutor for Sol Ring

If they do, tap this creature and create a 1/1 blue Fish creature token with "This token can't be blocked." At the beginning of each combat, if this creature is untapped, any opponent may tap an untapped creature they control

Even in one of my favorite Charizard cards, I'm still happy the Pokmon is getting some Grass-type beatdowns