Dreaded Nightfall

At the beginning of your upkeep you lose 2 life. Then, if you have 10 or less life, you lose the
game.
{b}, {t}: Attacking creatures get -3/-0 until end
of turn.
{1}{b}, {t}: Blocking creatures get -0/-3 until end
of turn.
{5}{b}, {t}: All creatures get -8/-8 until end of
turn.