Artefact

, sacrifiez le Sigille souillé : Vous gagnez un nombre de points de vie égal au total de points de vie perdus par tous les joueurs ce tour-ci. (Les blessures provoquent la perte de points de vie.)
Tainted Sigil’s ability checks only whether life was lost. It doesn’t care whether life was also gained. For example, say one player lost 4 life during the turn and no one else lost any, but that same player also gained 6 life that turn. That player has a higher life total than they started the turn with — but Tainted Sigil’s ability counts only the life loss, so you’ll gain 4 life.