Altar of Bone

{G}{W} · Sorcery

As an additional cost to cast this spell, sacrifice a creature. Search your library for a creature card, reveal it, put it into your hand, then shuffle.

Motor: se resuelve a mano

Rulings (3)

Players can only respond once this spell has been cast and all its costs have been paid. No one can try to destroy the creature you sacrificed to prevent you from casting this spell.
Wizards of the Coast · 2013-04-15
You must sacrifice exactly one creature to cast this spell; you cannot cast it without sacrificing a creature, and you cannot sacrifice additional creatures.
Wizards of the Coast · 2013-04-15
Because the “search” requires you to find a card with certain characteristics, you don’t have to find the card if you don’t want to.
Wizards of the Coast · 2004-10-04