Accursed Horde

A Zombie payoff that scales sideways instead of up. Where most tribal anthems hand the team a static bonus or a passive keyword, this one charges for its support: each black-and-one investment buys indestructibility for a single attacker, on demand, during combat. That repeatable, pay-per-creature shape is the design wrinkle. It turns open mana into a combat threat, letting a swarm punch through blockers without losing the body to a chump trade and surviving a defender's damage on the way out. The targeting clause is the leash: the ability only reaches an attacking Zombie, so declaring the attack is the price of admission. But once it resolves, the indestructibility lasts until end of turn, which quietly widens the payoff. Point it at a swinger during combat to carry the protection through your own postcombat main phase against a sweeper, or hold it up as a response to a targeted destroy effect on your attacker after blocks, and the protection outlives the combat step it was purchased in. It does nothing against bounce or -X/-X effects that route around the word "destroy," and nothing while the creature's toughness sits at zero, as the reminder text spells out. As a body it is unremarkable by intent; the value lives in the activations, and a wider board simply gives you more attackers to aim them at. It rewards breadth over a single big threat, and it asks you to hold mana back rather than commit it, a tension that suits the grinding posture black Zombie decks already favor.