Vexis, Living Phylactery

When Vexis, Living Phylactery enters the battlefield, create three 2/2 black Zombie creature tokens. When Vexis leaves the battlefield, you lose the game.
Zombies you control get +1/+1.
{p/u}{p/u}, sacrifice a Zombie: counter target spell.
On a plane far from prying eyes, Tezzeret hid a dark secret: his own son, the source of his power.