Thestalos the Firestorm Monarch is a Quarter Century Secret Rare Effect Monster card from Yu-Gi-Oh! (Quarter Century Bonanza, RA03). Current market price: $0.65.
Quarter Century Secret Rare
Quarter Century Bonanza (RA03)
Card Text
If this card is Tribute Summoned: Discard 1 random card from your opponent's hand, then, if it was a Monster Card, inflict damage to your opponent equal to its original Level x 100.
