If you lose enough life to lower your life total to 0 or less, you’ll lose the game as a state-based actions before you activate Tainted Sigil’s ability.
Tainted Sigil
When Tainted Sigil’s ability resolves, it checks how much life each player lost over the course of the turn, then it totals that number and you gain that much life in one shot. It doesn’t matter how a player lost life or what caused it. It also doesn’t matter if Tainted Sigil wasn’t on the battlefield when some or all of the life was lost.
Tainted Sigil’s ability counts the life lost by all players, including you.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Chippy
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
