Forgotten One

Death Throes 2{c} (If you discard this card, discard
it into exile. You may cast it this turn for its death
throes cost. It gains haste. Exile it at the beginning
of the next end step or if it would leave the battlefield.)
Annihilator 1 (Whenever this creature attacks, defending player sacrifices a permanent.)
With out its progenitor, madden and dying, but still
ever hungry.