Plasmid v2: Houdini

Enchant creature card in a graveyard
When Houdini enters the battlefield, if it's on
the battlefield, it loses "enchant creature card in
a graveyard" and gains "enchant creature put
onto the battlefield with Houdini." Return
enchanted creature card to the battlefield under
your control and attach Houdini to it. When
Houdini leaves the battlefield, that creature's controller sacrifices it.
Enchanted creature gets -1/-0.