Darth Nihilus, Dark Omen

Lifelink. Whenever a creature dies, you gain 1 life.
When Darth Nihilus, Dark Omen attacks, he
deals 1 damage to each opponent, and 1 damage
to each creature you don't control, and you gain
1 life.
At the beginning of every upkeep, put a -1/-1
counter on X target creatures, where X is equal
to the total amount of life lost this turn.