Planeswalker legendario — Sorin
+1 : Hasta una criatura objetivo obtiene +2/+0 hasta el final del turno.
−2 : Sorin, señor vampiro hace 4 puntos de daño a cualquier objetivo. Ganas 4 vidas.
−8 : Hasta el final del turno, cada Vampiro que controlas gana "

: Gana el control de la criatura objetivo".
If the chosen target is an illegal target by the time Sorin's second ability tries to resolve, the ability doesn't resolve. You won't gain 4 life.
The control-change effect from ability granted by Sorin's last ability lasts indefinitely. It doesn't wear off during the cleanup step, and it doesn't expire if Sorin or a Vampire whose ability was activated leaves the battlefield. In a multiplayer game, it does expire if you leave the game.