Mischievous Varmint

Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under it's owner's control with a +1/+1 counter on it.)
{u}{b}{g}: Put Mischievous Varmint on top of its owner's library.
Whenever you draw Mischievous Varmint, target creature gets +1/+1 until end of turn.