You can only use each of the following effects of "Kashtira Fenrir" once per turn
send cards from the top of your Deck to the GY, equal to the number of cards your opponent controls, then draw 1 card and show it
If it is discarded to the GY, you can add a Level 5 or higher "Dark World" monster from your Deck to your hand, and if it was your opponent who forced you to discard, watch out!
He likes to tell us that Jigglypuff which he pronounces Riggelypuff is his favorite and regularly shocks me while pretending to be Pikachu
We thought it may have peaked in value - as much more recently, a PSA 10 copy of the card went for just $38,100 (30,300) - but apparently not, as on June 1, 2023, Rayquaza sold again for $48,598