Jy'lenn, Eldritch Marquess

When Jylenn, Eldritch Marquess enters the battlefield, you may pay 3 life. If you do, you
may search your library for a black or colorless
card and put it into your hand. If you do, shuffle
your library.
"Come, my pet. Let us play your favorite game. Find
me the most brilliant man you can and bring him back.
You can eat his mind and I'll eat his soul. Now, run
along, darling...
Fetch."