Start the Master Plan

Target creature you control becomes a copy of
target creature you don't control, except it keeps
its abilities. Put the creature you don't control
under the top X cards of its owner's library,
where X is its converted mana cost, then attach
all auras and equipment attached to that creature
to the creature you control. (The copy effect lasts indefinitely.)
"Call me a master musician, because I played you
like a fiddle."
—Joseph, Hope Abandoned