Martyr's Cause

Damage prevention with a recurring fuel cost: feed it a creature, name a source, and the next chunk of damage that source would deal evaporates. The clever part is how broad the prevention shield reads. The "source of your choice" clause means this is not strictly a Fog for one attacker or a guard against one burn spell; it can blank a creature's whole combat damage assignment, neuter a damage-based removal source, or shut down a single ping from a chosen permanent. Each activation only handles the next instance, so against a wide board it bleeds creatures fast, but against a single threatening source (a fattie swinging in, a one-shot burn finisher) it converts a chump-block into a cleaner, more flexible answer that resolves before damage rather than during combat. The design sits at the intersection of two old white disciplines: the prevention shield and the sacrifice outlet. By tying the shield to a creature sacrifice rather than a mana cost, it doubles as fodder for whatever wants creatures dying, which is the angle that keeps it relevant long after the prevention rate stopped impressing anyone. The body it protects is your life total, but the body it consumes can be the engine you actually care about.