Tireless Tracker [Shadows over Innistrad]

Set: Shadows over Innistrad Type: Creature — Human Scout Rarity: Rare Cost: {2}{G} 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.