Numia, the Cursed Child

If Numia, the Cursed Child leaves the field by any means: search your library for another card with "Numia" in it's name and put it into play.
{t} Put a -1/-1 counter on Numia, the Cursed Child. Your life total cannot change this turn. Draw a card.
{w/u}{u/b} Sacrifice up to three creatures: each opponent mills three cards from the top of their library for each creature sacrificed this way.