Liliana Vess

Deathtouch, Ward- Discard a card & Limbo
If Skorn's face up or you have 10 or less life
or there are 4 or more Aberrations on the battlefield, you may pay {b}{b} to flip this.
Whenever one or more of your opponents creatures dies it's controller either loses 1
life or they allow you to gain 1 life.