Rule 727.6 · Restarting the Game
If a Magic subgame (see rule 729) is restarted, the main game is unaffected. Main-game effects that refer to the winner or loser of the subgame now refer to the winner or loser of the restarted subgame.
Ask the judge Pro
The life counter has an AI judge that answers your play citing the exact rules. It is part of Gatewatch Pro; the rules, Oracle text and rulings stay free.