Shadow Moon, Creation King

If a source would deal damage to a permanent
or player, it deals double that damage to that permanent or player instead.
{2}{p/b}{p/r}, {t}: Place -1/-1 counters, divided as
you choose among target creatures for each life target player lost this turn.
{6}{p/b}{p/r}, {t}, Exert Shadow Moon, Creation King: Choose a color; Exile all nonland permanents of the chosen color. Transform Shadow Moon, Creation King.