nervasa, the undying hero

: at the beginning of each upkeep, if an opponent lost life last turn, put a loyalty counter on her for each one life he lost.
+2: target demon gets "this creature has power and toughness 1" or "this creature has power and toughness 10".
-12: you get an emblem with: "at the beginning of each upkeep, if at least three demons left or entered the battlefield last turn, you win the game.