Jailek Thrush, Death's Knife

First Strike, Deathtouch
Whenever Jailek Thrush, Death's Knife attacks,
target creature defending player controls gets
-1/-1 and is tapped. Whenever a creature dies,
if it had a -1/-1 counter on it, destroy target
creature.
"Like a shadow in the dark, or a knife
through flesh, he drifts along, hunting his marks
without mercy."