Sacrifice
Buy
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As an additional cost to cast this spell, sacrifice a creature.
Add an amount of 
equal to the sacrificed creature's mana value.
Illustrated by Dan Frazier
Rulings (3)
Oct 4, 2004
Sacrificing an animated land gives no mana since the converted mana cost was zero.
Apr 15, 2013
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.
Apr 15, 2013
You must sacrifice exactly one creature to cast this spell; you cannot cast it without sacrificing a creature, and you cannot sacrifice additional creatures.
