Irchlriach, the Plague

When this enchantment enters the battlefield, destroy another target artifact or enchantment.
Non-Germ creatures get -2/-2.
At the beginning of each upkeep, if fewer than three creatures died last turn with 0 or less toughness, put a -1/-1 counter on each non-Germ creature. When you do, sacrifice this enchantment if there are no creatures on the battlefield.