Tireless Tracker

Tireless Tracker {2}{G}

Creature - Human Scout | Power/Toughness: 3 / 2
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.