Altar of Dementia (Retro Schematic) [The Brothers' War Retro Artifacts] 1HP047 You may cast Gravecrawler from

You may cast Gravecrawler from your graveyard as long as you control a Zombie

a creature

the Hunger Tide isn't on the battlefield

Curse cards in lineages have “Inherited Effect: At the beginning of your recollection phase

If they exist

Altar of Dementia (Retro Schematic) [The Brothers' War Retro Artifacts] 1HP047 You may cast Gravecrawler fromSet: The Brothers' War Retro Artifacts Type: Artifact Rarity: Mythic Cost: {2} Sacrifice a creature: Target player mills cards equal to the sacrificed creature's power. My dreams have brought more visions from our master: an altar, exquisite and perfect. We must build it at once. Writings of Artonac, priest of Gix