Collective Dendrite

{2}, {t}: Exile target artifact creature card from
your graveyard, create X 1/1 colorless Krawler artifact creature tokens, where X was the exiled
creature's toughness.
Morph {4}(You may cast this card face down as a
2/2 creature for {3}. Turn it face up any time for
its morph cost.)
When Collective Dendrite is turned face up, you
may mill two cards.