Yawgmoth's Altar

Sacrifice a creature: Put a Charge counter on
Yawgmoth's Altar, then Surveil 1.
Remove three Charge counters from Yawgmoth's
Altar: Search your library for a card and put it
into your hand, then shuffle your library.
Yawgmoth saw the body as imperfect; it permitted
disease. If he were to achieve immortality, bodies
would need to be remade completely artificially.