Matzalantli, the Great Door // The Core

Description

Matzalantli, the Great Door // The Core (LCI-256) is a legendary artifact that can transform into a legendary land from The Lost Caverns of Ixalan. The front taps to draw then discard and can transform if there are four or more permanent types among cards in your graveyard. The back, The Core, has a fathomless descent mana ability that taps for X mana of one color equal to the number of permanent cards in your graveyard.