Eternal Servant

Necromorph {b} (You may cast this card face down
as a 2/2 creature for {3}. When this creature dies, if it
is face-down, you may pay its necromorph cost. If you
do, return it to the battlefield face up.)
{b}{b}: Turn Eternal Servant face-down.
"You will serve me... forever."
—Dragonlord Silumgar