Fabrication Foundry (Promo Pack) [The Lost Caverns of Ixalan Promos]

Set: The Lost Caverns of Ixalan Promos Type: Artifact Rarity: Rare Cost: {1}{W} T: Add W. Spend this mana only to cast an artifact spell or activate an ability of an artifact source. 2W, T, Exile one or more other artifacts you control with total mana value X: Return target artifact card with mana value X or less from your graveyard to the battlefield. Activate only as a sorcery.