Ludleth of Courland

{t}, Sacrifice a legendary creature: Search your
library for a legendary equipment card and put
it onto the battlefield attached to target creature
you control. Then shuffle your library.
Transposition is the art of extracting, and coalescing
the essence of a soul. In transposing a twisted soul, its
true power transferreth to thee. Thy purpose is to seek
Lords, and slay them. What's to fear in a little
transpositon, now?