
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.
Tireless Tracker has 21 printings, first in Shadows over Innistrad (2016). EDHREC ranks it #672 among Commander cards. It appears most in Morska, Undersea Sleuth decks (6,226 on EDHREC). 7 public decks on TCG run it. It has 8 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.