The Fourth Sister

Flying, First Strike
When the Fourth Sister enters the battlefield, you draw two cards and lose 3 life.
Whenever the Fourth Sister becomes blocked by a creature, she deals 5 damage to that creature.
Whenever the Fourth Sister deals combat damage to a player, you draw a card gain 1 life.
Whenever the Fourth Sister blocks a creature, you may sacrifice a creature. If you do, destroy target enchantment.