Quilxius, Shadow Reaper

: Quilxius enters the battlefield with an additional X loyalty counters on it. Then you lose X life. Shroud
+1: Sacrifice a creature. Put loyalty counters on Quilxius equal to the lowest value among it's converted mana cost, power and toughness.
-18: All players sacrifice all their ceatures. You lose 1 life for every X creatures that died this way, roudned up, where X is the number of players.