Entity of the Imbalance

At the beginning of your upkeep, each opponent
loses 5 life. You gain life equal to the life lost this
way.
Discard a card: Destroy each creature with
converted mana cost 3 or less.
{1}{w}{b}, Sacrifice another creature: Exile target
non land permanent. Activate this ability only if
you have at least 10 life more than your starting
life total.