Yent, Breaker of the Ranks

When Yent, Breaker of the Ranks enters the battlefield, creatures your opponent controls get
-3/-3 until end of turn.
Soldier creatures get -1/-1.
At the beginning of your end step, you pay X
life, where X is the number of creatures that died this turn. If you do, return target creature with mana
value X or less from your graveyard to the battlefield.