Reign, Shadow Bender

+1: Gain control of all permanents with 3 or more black mana in their mana cost.
-1: Put a "Hosting" emblem with (If this emblem is not removed in five turns, host creature dies) on 2 target permanents.
-6: Gain control of all permanents with "Hosting" emblems and all opponents take 6 damage, discard 6 cards, and sacrifice six lands.