Ritual of Restoration
Artifact recursion priced for an artifacts-matter world: a one-mana sorcery whose only job is to fish a fallen artifact back out of the bin. The narrowness is the whole bargain. A spell that returned any card from the graveyard would cost more and read as a tempo loss; restricting the target to artifacts lets the rate drop to a single white pip, which matters when the card you want back is a cheap engine piece, a sacrificed equipment, or an artifact you fed to your own outlet on purpose. White rarely gets to rebuy from the graveyard at all (its recursion usually lives in creatures or in flicker effects), so handing it a regrowth that only works on artifacts is a clean way to extend white's reach without stepping on the color's identity. The catch is that the spell is inert in any deck that does not already lean on artifacts; pull it out of that shell and there is nothing for it to return, which is exactly the constraint that justifies the cost. As a piece of color-pie engineering it is a small, honest answer to a specific question: how do you let white loop its artifacts without giving it a universal recursion spell it was never supposed to have?
