Landfall — Whenever a land enters the battlefield under your control, investigate.
(Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")
Whenever you sacrifice a Clue, put a +1/+1 counter on Tireless Tracker.
"Tell me, Muse, of that man, so ready at need, who wandered far and wide."
—Homer, The Odyssey