The Unholy Chalice

Dying wish {3}{b}: (Whenever a creature you control
dies, you may cast this card for its dying wish cost.)

Sacrifice The Unholy Chalice: Choose target
creature card in your graveyard. Return that card
to the battlefield under your control, then exile
The Unholy Chalice unless you pay 3 life. If you
do put it on the bottom of it's owner's library
instead.

"The Holy Grail? I've never heard of such a thing!"