Thuringwethil, Blood Drinker

Flying, lifelink
Whenever Thuringwethil, Blood Drinker attacks,
each opponent puts the top four cards of your
library into your graveyard.
Whenever Thuringwethil, Blood Drinker deals
combat damage to an opponent, that player loses
1 life for each creature card in their graveyard.
"None can sate her thirst."