Tireless Tracker is a rare Creature — Human Scout card from Secret Lair Drop (SLD), collector number 1094. Current market price: $2.33 (foil $2.68), TCGplayer market prices via Scryfall.
Landfall — Whenever a land you control enters, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.") Whenever you sacrifice a Clue, put a +1/+1 counter on this creature.