Phyrexian Reclamation

Cheap, repeatable creature recursion has always lived on a knife's edge of cost, and this is the design that found the cleanest balance: a single black mana to put the engine on the table, then a recurring tax of mana and life to pull each creature back. The life payment is the load-bearing constraint. It keeps the activation from being free, scaling the cost to how often you want to loop, and it turns the card into a soft clock against yourself the way Necropotence and Yawgmoth's Bargain do. That self-inflicted pressure is exactly what lets it be reusable without breaking: a recursion engine that costs nothing to maintain would dominate any attrition fight, so the friction has to live in the activation rather than the enchantment. What makes it durable across the years is how indifferent it is to what it returns. It does not care whether the creature is a sacrifice-fodder one-drop, a value engine you keep replaying into a removal-heavy battlefield, or a single bomb you want to never lose. The same line of text does graveyard-grinding work and toolbox work depending on the deck wrapped around it. It asks one question of the builder: do you have creatures worth buying back at two life a piece? When the answer is yes, the engine quietly never stops.