Matzalantli, the Great Door // The Core [The Lost Caverns of Ixalan]

Set:	The Lost Caverns of Ixalan
Type:	Legendary Artifact // Legendary Land
Rarity:	Rare

T: Draw a card, then discard a card.

4, T: Transform Matzalantli, the Great Door. Activate only if there are four or more permanent types among cards in your graveyard. (Artifact, battle, creature, enchantment, land, and planeswalker are permanent types.)

Reverse Type:

Legendary Land

(Transforms from Matzalantli.) Fathomless descent — T: Add X mana of any one color, where X is the number of permanent cards in your graveyard.

Centuries ago, under siege from the Mycotyrant, the Oltec sealed the Core off from the world… until Huatli's party arrived.