Jadelight Spelunker [The Lost Caverns of Ixalan]

Set:	The Lost Caverns of Ixalan
Type:	Creature — Merfolk Scout
Rarity:	Rare
Cost:	{X}{G}

When Jadelight Spelunker enters the battlefield, it explores X times. (To have it explore, 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 that creature, then put the card back or put it into your graveyard.)

The River Heralds found clues to a grand heritage below Ixalan's surface.