Nest snatcher

Terror (This creature deals damage in -1/-1 counters.
Any creature that receives any -1/-1 counters from
this creature also receives a terrified counter).
When this creature enters the battlefield create a
0/1 colorless egg creature token with
"{1}{b}{t}, sacrifice this creature: Reveal cards from
the top of your library until you reveal a creature
card, put that card unto the battlefield with a
-1/-1 counter on it if it is not a horror, and then
shuffle your library."