Matzalantli, the Great Door // The Core – The Lost Caverns of Ixalan (LCI) #256

Description

{T}: Draw a card, then discard a card.
{4}, {T}: Transform Matzalantli. 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.)