Skulk Shrieker

Skulk Shrieker enters the battlefield tapped with
two stun counters on it.
Whenever one or more creatures enter the battlefield under an opponent's control, untap
Skulk Shrieker.
{w/b}{w/b}, {t}: Search your library for a Skulk card,
put it onto the battlefield tapped, then shuffle.
Put a stun counter on each Skulk card
you control.