!Sacrifice - mtg.wtf

Instant

As an additional cost to cast this spell, sacrifice a creature.
Add an amount of equal to the sacrificed creature's mana value.

Cultists eagerly undergo the Rite of the Threshold, allowing Valgavoth to feed on their fear and bind them to the essence of the House.

Related card: Skoa, Embermage

2004-10-04 Sacrificing an animated land gives no mana since the converted mana cost was zero.
2013-04-15 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.
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.

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