Un sacrifice est une mise au cimetierre d'un permanent que l'on contrôle, pas une destruction (je me rappelle mes premières parties où je regenerais des créatures sacrifiées pour tel ou tel effet

).
Comprehensive Rules
Sacrifice
To sacrifice a permanent, its controller moves it from the in-play zone directly to its owner's graveyard. A player can't sacrifice something that isn't a permanent, or something that's a permanent he or she doesn't control. If an effect instructs a player to sacrifice a permanent that he or she doesn't control, nothing happens. Sacrificing a permanent doesn't destroy it, so regeneration or other effects that replace destruction can't affect it.