Kaslem's Stonetree // Kaslem's Strider

Set name - The Lost Caverns of Ixalan
When this artifact enters, look at the top six cards of your library. You may put a land card from among them onto the battlefield tapped. Put the rest on the bottom in a random order.
Craft with Cave (, Exile this artifact, Exile a Cave you control or a Cave card from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.)

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The Oltec long ago abandoned the caverns to the mycoids, but the Deep Gods still keep watch over the spore-strewn darkness.