Coffin Puppets

The recursion clause here is built on a tax the card never lets you stop paying. Most graveyard-return engines spend mana to come back; this one spends board, sacrificing two lands every time you want the Zombie on the battlefield. That puts the card in a strange design pocket where its repeatability is real but its cost compounds against itself: each recursion shrinks the manabase that fuels the rest of your turn, so the loop only works if you have something doing the dying for value or something soaking the lands back up. The upkeep-only window is the other half of the discipline. You cannot bring it back in response to a removal spell or rebuild after a board wipe at instant speed; you wait for your own turn, you confirm you still hold a Swamp, and only then do you pay. That timing restriction keeps a recurring 3/3 body from ever being reactive, which is the friction that justifies letting it come back at all. The land-sacrifice cost reads like a drawback, but it was clearly meant to be the point: a creature designed for grindy attrition shells where lands are resources to be spent, not just tapped, and where the slow bleed of your own mana base is a tradeoff you accept for an attacker the opponent can never permanently remove.