The Stasis Coffin

Protection from everything is one of Magic's broadest keyword bundles, and this artifact aims it somewhere the game almost never puts it: at the player, not a creature. The distinction reshapes the whole board. You stop damage, you cannot be targeted, and nothing can be attached to you, all in a single activation. The window is the design. Fire it at the end of your turn and every point of burn, every combo that resolves by targeting your life total, every spell pointed at your face sits inert until you untap. It is not a universal ward, though: protection answers what aims at you, not what happens to everyone. A non-targeting edict that reads "each player sacrifices a creature" still hits your board, a symmetric wrath still lands, and a life-total-agnostic mill still resolves. The price for even that much is written into the card twice over. The legendary supertype caps you at one, and the self-exile clause makes the effect a single non-renewable escape hatch rather than a lock you leave standing. Press it once and the coffin is gone. That reads less like a defensive engine and more like a stored breath: a button you hold until the game is otherwise lost, buying exactly one cycle of immunity from everything an opponent can aim at you, so you can find the out that stops what they cannot.