Nazgul

Deathtouch
When the Nazgul enters the battlefield, you may search your library for a card named Nazgul,
reveal it, and put it on top of your library.
If the Nazgul would be put into your graveyard
from the battlefield, you may shuffle it into your library.
'They were once great kings of men. Then Sauron the deceiver gave to them nine Rings of Power. Blinded by their greed they took them without question, one by one falling into darkness. Now they are slaves to his will.'
—Strider