Emissary of Sunrise is a uncommon Creature — Human Cleric card from Ixalan (XLN), collector number 10. Current market price: $0.12 (foil $0.44), TCGplayer market prices via Scryfall.
First strike When this creature enters, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)