Obsessive Alchemist

Flash
When Obsessed Alchemist enters the battlefield, search your library for a double- -faced card, reveal it, and put it into your hand. Then shuffle your library.
When a creature enters the battlefield, if it is named Alchemist's Assistant or Unrestrained Subject, and you both own and control it, exile it and Obsessed Alchemist, then meld them */7> into Volatile Abomination.