Thestalos the Firestorm Monarch

Thestalos the Firestorm Monarch is not on our list of commonly-counterfeited cards, but counterfeits exist across every set. Check the holographic sticker on the bottom-right of the card face (real cards have a specific Konami anti-counterfeit pattern), the cardstock thickness and texture, font weight on the card name, and verify the set code printed on the card. For high-value copies we recommend submitting to a professional grader (PSA, BGS, CGC) for tamper-evident authentication.

As of the latest data, the current market reference price for Thestalos the Firestorm Monarch is $0.64; there are no active listings on The Game Traders right now. Actual value depends on condition, grading, edition and printing variant — graded high-condition copies (PSA 9–10) trade at a substantial premium over raw copies.

Thestalos the Firestorm Monarch is from the Yu-Gi-Oh! set "Quarter Century Bonanza", released in 2024.

Thestalos the Firestorm Monarch is a Quarter Century Secret Rare card in the Quarter Century Bonanza set.