Salvage Scout
A one-mana body that exists to be spent: the scout shows up, blocks once if it has to, and then trades itself plus a white mana to return the best artifact you have already lost back to your hand. That conversion is the whole point. In a deck where artifacts carry the value (equipment, mana rocks, a key combo piece, or anything you would happily mill or sacrifice into the yard), this turns the graveyard into a second hand and asks only that you part with a fragile body to do it. The recursion is strictly one-shot: the activation sacrifices the creature, so once you spend it the engine is closed until another copy shows up. That ceiling is what keeps a one-mana artifact recursion piece reasonable; it rewards a board where the returned artifact is worth more than a 1/1 attacker, and it punishes nothing else, since the worst case is a chump blocker that left a card in your hand. White's claim on the graveyard has always run through artifacts, enchantments, and small creatures, but its recursion usually arrives at a premium or stapled to a larger body. Doing artifact regrowth on a white one-drop, at instant speed, with no card disadvantage beyond the body you were going to lose anyway, is the kind of quiet, repeatable-by-redundancy recursion that artifact strategies have wanted both long before and long after this design first appeared.
