Phyrexian Altar [The List] Phyrexian Dragon Skeleton Set: March of the Machine

Set: March of the Machine Type: Enchantment Rarity: Rare Cost: {G}{G}{G} Whenever a creature enters the battlefield under your control

Sacrifice this artifact: Add one mana of any color" and loses all other card types and abilities

Heretical Healer

Set: Unknown Event Type: Artifact Land Rarity: Common T: Add C

(It's an aura with "enchanted creature gets +1/+1 for each artifact and/or enchantment you control

Phyrexian Altar [The List] Phyrexian Dragon Skeleton Set: March of the MachineSet: The List Type: Artifact Rarity: Rare Cost: {3} Sacrifice a creature: Add one mana of any color. Unskin these impure bodies, Great Yawgmoth, that the flesh may welcome your blessings. Phyrexian Scriptures