Liliana, a salvo de la muerte

Casting a Zombie card from your graveyard once Liliana’s third ability has resolved follows the normal rules for casting that card. You must pay its costs, and you must follow all applicable timing rules.

In a Two-Headed Giant game, Liliana’s first ability causes the opposing team to lose 4 life and you gain 2 life.

Once Liliana’s third ability has resolved, any Zombie cards in your graveyard may be cast this turn, including Zombie cards that enter your graveyard later in the turn.

The value of X is determined only as Liliana’s second ability resolves. If the number of Zombies you control changes later, the target creature’s power and toughness won’t change.