Withengar, Dark Ascended

: As long as Withengar, Dark Ascended has 3 or fewer loyalty counters on him, he has protection from nonblack, nonartifact sources.
+2: Each opponent creates a 1/1 white Human creature token, then sacrifices the creature with the greatest mana value among creatures they control.
-13: Each player sacrifices all creatures they control. Then, each player that sacrificed creatures with total mana value 13 or greater loses the game