Whenever a land enters the battlefield under your control, investigate. (Create a colorless Clue artifact token with "{2}, Sacrifice this artifact: Draw a card.") Whenever you sacrifice a Clue, put a +1/+1 counter on Tireless Tracker.
Near Mint - $1.20
Lightly Played - $0.90
Moderately Played - $0.80
Heavily Played - $0.70
Damaged - $0.60
Near Mint Spanish - $1.20
Lightly Played Spanish - $0.90
Moderately Played Spanish - $0.80
Heavily Played Spanish - $0.70
Damaged Spanish - $0.60