Sand Scout is a rare Creature — Human Scout card from Outlaws of Thunder Junction Commander (OTC), collector number 11. Current market price: $6.23, TCGplayer market prices via Scryfall.
When this creature enters, if an opponent controls more lands than you, search your library for a Desert card, put it onto the battlefield tapped, then shuffle. Whenever one or more land cards are put into your graveyard from anywhere, create a 1/1 red, green, and white Sand Warrior creature token. This ability triggers only once each turn.