Artefact

: Vous gagnez 1 point de vie. Ensuite, si vous avez au moins 10 points de vie de plus que votre total de points de vie de départ, transformez le Calice de la vie.
Artefact

: Le joueur ciblé perd 5 points de vie.
Your starting life total is the life total you began the game with. For most two-player formats, this is 20. For Two-Headed Giant, it's the life total your team started with, usually 30. In Commander games, the starting life total is 40.
You check your life total to see if Chalice of Life transforms only when its ability resolves.