The Agent of Mystery - Earth (Quarter Century Secret Rare) (RA04-EN146) [Quarter Century Stampede]

When this card is Normal Summoned: You can add 1 "The Agent" monster from your Deck to your hand, except "The Agent of Mystery - Earth" or, if "The Sanctuary in the Sky" is on the field, you can add 1 "Master Hyperion" from your Deck to your hand instead.