Rare White
You don't lose the game for having 0 or less life.
As long as you have 0 or less life, all damage is dealt to you as though its source had infect. (Damage is dealt to you in the form of poison counters.)
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Flavor:"While the realm's great minds quarreled over the strange eclipse, Locthwain fell to the invaders."
—Last Stand of the Realm