Junkyard Scavenger

Shimmer {1}{u}: You may cast Junkyard
Scavenger for its shimmer cost. If you do,
Junkyard Scavenger becomes an illusion in
addition to its other creature types, and has
"When this creature becomes the target of
a spell, sacrifice it."
When Junkyard Scavenger enters the battlefield,
you may return target artifact from your
graveyard to your hand.