If an effect refers to a Clue, it means any Clue artifact, not just a Clue artifact token. For example, you can sacrifice Wrench to pay for Alquist Proft, Master Sleuth's activated ability.
Lavinia, Foil to Conspiracy
Some spells and abilities that investigate may require targets. If each target chosen is an illegal target as that spell or ability tries to resolve, it won't resolve. You won't create any Clue tokens.
Clue is an artifact type. Even though it appears on some cards with other permanent types, it's never a creature type, a land type, or anything but an artifact type.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Chris Rahn
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
