Diabolic Tutor

Search your library for a card and put that card into your hand. Then shuffle your library.
Chandra's own grin came unbidden. "Liliana, you're two centuries older than me. Exactly which of us is supposed to be the responsible one?"
"Let me tell you a secret." Liliana cupped a hand playfully near Chandra's ear. "There doesn't have to be a responsible one."