Mushroom Seeker

When Mushroom Seeker enters the battlefield,
you may tap any number of untapped basic lands
you control. For each one tapped this way,
Investigate. (Put a colorless Clue artifact token onto
the battlefield with ''{2}, Sacrifice this artifact: Draw
a card.'')
Whenever you sacrifice a Clue token, create a 0/1
green Plant creature token and untap up to one
target tapped basic land you control.