MAGIC: THE GATHERING
|Type:||Creature - Human SCout|
Whenever a land enters the battlefield under your control, investigate. (Put a colorless Clue artifact token onto the battlefield with ", Sacrifice this artifact: Draw a card.")
Whenever you sacrifice a Clue, put a +1/+1 counter on Tireless Tracker.
Tireless Tracker quickly made its way into the Collected Company decks that were dominating Standard when it came out. The clues it produces add up to serious card advantage if it's left unchecked.