Box of Secrets

Activated abilities of Clues can't be activated.
{t}: Investigate. (To investigate, create a colorless
Clue artifact token with "{2}, Sacrifice this artifact:
Draw a card".)
{t}, Sacrifice Box of Secrets: Choose a permanent
card in your graveyard. If that card has mana
value less than the number of Clues you control,
put it onto the battlefield. Otherwise, put it into
your hand.