Shaddoll Squamata

Flip (You may cast this face down as a 2/2 creature
for {3}. Turn it face up by paying it's mana cost any
time it attacks or blocks.)
When Shaddoll Squamata is turned face up,
destroy target creature.
When a spell or ability puts this card into your graveyard (from anywhere), you may search your library for a colored artifact and put it into your graveyard, then shuffle your library.