Oracle

Sorcery 

As an additional cost to cast this spell, sacrifice a creature.
Destroy target creature. Its controller loses life equal to the number of creatures that died this turn.

Tournooi-info

Legal in: Vintage, Legacy, Modern, Commander

Officiele rulings

1/1/2011
Flesh Allergy counts each creature put into a graveyard from the battlefield that turn, including token creatures, the creature sacrificed to cast the spell, and the targeted creature (if it is destroyed).

1/1/2011
If the targeted creature is an illegal target by the time Flesh Allergy resolves, the spell doesn’t resolve. No player will lose life.

1/1/2011
You can target a creature you control, then sacrifice that creature to pay the additional cost. However, if you do, Flesh Allergy won’t resolve for having an illegal target. You won’t lose any life.

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.

7/1/2013
If Flesh Allergy resolves but the targeted creature is not destroyed (because it has indestructible or enchanted by an Aura with totem armor, for example), its controller will still lose life.

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