Ultron, in the Flesh

When Ultron, in the Flesh enters the battlefield,
you may search your library and/or graveyard for
a card named Ultron, Prototype, reveal it, and
put it into your hand. If you search your library
this way, shuffle it.
Sacrifice Ultron, in the Flesh: Regenerate target artifact creature.
"I believe your intentions to be hostile." —Jarvis
"Shhhh...I'm here to help." —Ultron