{@R} Fabrication Foundry (Extended Art) [The Lost Caverns of Ixalan][LCI 354]

: Add . Spend this mana only to cast an artifact spell or activate an ability of an artifact source.
{2}, , 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.