Immortal Coil

A defensive engine that turns your graveyard into a second life total, and one of the rare designs where running an engine dry does not stall you out but kills you outright. Damage prevention has been a white staple since the earliest days of the game, but bolted to black it bleeds in the same direction as the protection: every point you stop strips a card from your yard, and the moment that yard hits zero, the triggered loss fires and the game is over. The draw ability compounds the problem rather than relieving it, since the only fuel it accepts is the same graveyard the prevention is busy consuming. That inverts the usual deckbuilding question. The job is not filling your hand or board but keeping cards flowing back into the bin faster than this artifact and your opponents can empty it, so self-mill, recursion, and regrowth stop being value tools and become survival infrastructure. The no-cards clause is what gives the card its identity: not a soft floor but a permanent edge, where a burn spell is lethal precisely because it can drain a thin graveyard past empty in a single hit. That same cliff is the seed of the donation line: handed to an opponent with a small yard, the prevention clause becomes a strip-mining engine that loses them the game. Designs that punish you for your own resources running out are scarce because they are hard to balance; this one walks all the way out onto the ledge and asks you to stand there on purpose.