Perhaps you are thinking of one of the following:
* Holofoil Charizard: These cards have a holographic foil pattern over the artwork, making them more visually appealing and collectible. Many different Charizard cards are holofoil, and their rarity varies depending on the set and edition.
* "Holo" as a shortened term: Sometimes people use "holo" as a shortened term for "holofoil."
* A specific set/edition you're unsure about: If you have a specific Charizard card in mind, please describe it so I can help you determine its rarity.
To help you find the information you need, please tell me:
* What specific Charizard card are you interested in? (e.g., the Charizard from the Base Set, the Charizard from the FireRed & LeafGreen set, etc.)
* What year was the card printed?
* What is the card's rarity symbol (if any)? (e.g., common, uncommon, rare, etc.)
Once you provide me with these details, I can tell you about the card's rarity.