: Draw a card, then discard a card.
, : 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.)

Back
The Core
Legendary Land
(Transforms from Matzalantli.)
Fathomless descent - : Add X mana of any one color, where X is the number of permanent cards in your graveyard.