Corpse-Weeper

Corpse-Weeper enters the battlefield with a
+1/+1 counter on it for each creature that died
this turn.
When a creature dealt damage by Corpse-Weeper
dies, search its owner's library for any number of
cards with the same name and put them into the
graveyard.
"They mimic the cries for help of prey they capture to
lure others to their colonies."