Titan of Death

Whenever a zombie you control attacks,
create a */1 black zombie token creature with,
This creature's power is equal to the number of
zombies you control.
Whenever a zombie you control dies,
target opponent loses a life.
{4}{b}{t} All creatures get -1/-1 until end of turn.
Any player may activate this ability.
{1}{b}: Discard your hand return this creature
from your graveyard to your hand.