Vivalynd's Loyal Servant

Menace
Making of Martyrs - Whenever an opponent sacrifices a creature or discards a card, you may
pay {b}. If you do, create a copy of this creature
except it loses this ability and gains decayed.
(This creature can't block and whenever it attacks, sacrifice it at the end of combat.)
"O' Dark Mistress...trudge my mind. I must know...
who I once was..."