Blinding Powder

The trick here is that the Equipment removes itself to do its job. Most fog effects are spells you spend a card on; this one lives on a creature as a recurring shield, paid for with a single unattach activation rather than a fresh card from hand. The cost structure tells the design story: the equip is the expensive part at two mana, and once it sticks, the combat-damage prevention is free and reusable, available at instant speed every combat you can afford to pop it off. You sacrifice nothing but the equipped state, and re-equipping later is just another two mana when you want the protection back. As combat math it turns a creature into an ambush blocker that walks away unharmed from any single fight, then re-arms. The catch sits in two places. First, the prevention is scoped to the equipped creature alone, so it shields one attacker or blocker rather than the board. Second, and more limiting, it stops only combat damage: a removal spell, a damage-based burn answer, or any noncombat effect kills the wearer just as dead, and the unattach payment means the artifact spends each turn either guarding or idling on a body, never both. It is a quiet, fiddly tool built for grindy creature stalls where keeping one threat alive through combat after combat matters more than tempo, the kind of repeatable defensive piece that rarely headlines a deck.