Sacrifice

Interrupt    (CMC:1)

Destroy one of your creatures without regenerating it, and add to your mana pool a number of black mana equal to black creature's casting cost.

1E • ENDan Frazier

™ & © 1993—1993 Wizards of the Coast

Legal in: Legacy,Vintage,Commander

Oracle Text (click to copy):

Sacrifice {B} Instant As an additional cost to cast Sacrifice, sacrifice a creature. Add to your mana pool an amount of {B} equal to the sacrificed creature's converted mana cost.

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10/4/2004
Sacrificing an animated land gives no mana since the converted mana cost was zero.
4/15/2013
You must sacrifice exactly one creature to cast this spell; you cannot cast it without sacrificing a creature, and you cannot sacrifice additional creatures.
4/15/2013
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.

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