Slumbering Grave-Titan

Slumbering Grave-Titan enters the battlefield
asleep. (Asleep creatures cannot attack or block, and
their activated abilities cannot be activated)
Menace
During your end step, if Slumbering Grave-Titan
is asleep, you may sacrifice a creature. If you do,
you lose 2 life and draw two cards. Then, if your
life total is 10 or less, Slumbering Grave-Titan
awakens.