Tireless Tracker is a rare Creature — Human Scout card from Murders at Karlov Manor Commander (MKC), collector number 190. Current market price: $0.40, 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.