River Herald Guide [The Lost Caverns of Ixalan]

Set: The Lost Caverns of Ixalan Type: Creature — Merfolk Scout Rarity: Common Cost: {2}{G} VigilanceWhen River Herald Guide enters the battlefield, 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.)