Yathan Roadwatcher is a rare Creature — Human Scout card from Tarkir: Dragonstorm Promos (PTDM), collector number 236p. Current market price: $0.22 (foil $0.30), TCGplayer market prices via Scryfall.
When this creature enters, if you cast it, mill four cards. When you do, return target creature card with mana value 3 or less from your graveyard to the battlefield.