The Bringer of Dark Rain

Begin the game with this card revealed.
During each player's upkeep, creatures they
control take get a -1/-1 counter, and Vehicles
permanently lose 1 power and toughness.
If its base power is 0, instead, it gets a +0/+1
counter but gains defender.
If a permanent dies or is destroyed by this,
its controller loses 1 life.
You cannot have or gain a a win condition.